Finding the Fourth Proportional to 1,123,499.24, 1,550,317.54 and 640,035.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,499.24 : 1,550,317.54 = 640,035.58 : x
2. Step 2: Convert to fraction form
   1,123,499.24/1,550,317.54 = 640,035.58/x
3. Step 3: Cross multiply
   1,123,499.24x = 1,550,317.54 × 640,035.58
4. Step 4: Simplify right side
   1,123,499.24x = 992,258,385,898.07
5. Step 5: Solve for x
   x = 992,258,385,898.07/1,123,499.24
6. Step 6: Final answer
   x = 883,185.63