Finding the Fourth Proportional to 1,265,838,506.82, 1,898,684,218.71 and 380,504,748.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,265,838,506.82 : 1,898,684,218.71 = 380,504,748.42 : x
2. Step 2: Convert to fraction form
   1,265,838,506.82/1,898,684,218.71 = 380,504,748.42/x
3. Step 3: Cross multiply
   1,265,838,506.82x = 1,898,684,218.71 × 380,504,748.42
4. Step 4: Simplify right side
   1,265,838,506.82x = 722,458,360,969,272,832
5. Step 5: Solve for x
   x = 722,458,360,969,272,832/1,265,838,506.82
6. Step 6: Final answer
   x = 570,735,016.42