Finding the Fourth Proportional to 1,123,474.66, 1,550,404.20 and 640,032.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,474.66 : 1,550,404.20 = 640,032.10 : x
2. Step 2: Convert to fraction form
   1,123,474.66/1,550,404.20 = 640,032.10/x
3. Step 3: Cross multiply
   1,123,474.66x = 1,550,404.20 × 640,032.10
4. Step 4: Simplify right side
   1,123,474.66x = 992,308,455,974.82
5. Step 5: Solve for x
   x = 992,308,455,974.82/1,123,474.66
6. Step 6: Final answer
   x = 883,249.52