Finding the Fourth Proportional to 1,090,120.82, 1,635,188.52 and 380,146.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090,120.82 : 1,635,188.52 = 380,146.10 : x
2. Step 2: Convert to fraction form
   1,090,120.82/1,635,188.52 = 380,146.10/x
3. Step 3: Cross multiply
   1,090,120.82x = 1,635,188.52 × 380,146.10
4. Step 4: Simplify right side
   1,090,120.82x = 621,610,538,642.77
5. Step 5: Solve for x
   x = 621,610,538,642.77/1,090,120.82
6. Step 6: Final answer
   x = 570,221.69