Finding the Fourth Proportional to 660,883.98, 912,016.71 and 374,403.38

Step by Step Solution

1. Step 1: Write the proportion equation
   660,883.98 : 912,016.71 = 374,403.38 : x
2. Step 2: Convert to fraction form
   660,883.98/912,016.71 = 374,403.38/x
3. Step 3: Cross multiply
   660,883.98x = 912,016.71 × 374,403.38
4. Step 4: Simplify right side
   660,883.98x = 341,462,141,120.52
5. Step 5: Solve for x
   x = 341,462,141,120.52/660,883.98
6. Step 6: Final answer
   x = 516,674.86