Finding the Fourth Proportional to 883,131.30, 1,218,651.71 and 501,158.07

Step by Step Solution

1. Step 1: Write the proportion equation
   883,131.30 : 1,218,651.71 = 501,158.07 : x
2. Step 2: Convert to fraction form
   883,131.30/1,218,651.71 = 501,158.07/x
3. Step 3: Cross multiply
   883,131.30x = 1,218,651.71 × 501,158.07
4. Step 4: Simplify right side
   883,131.30x = 610,737,136,480.01
5. Step 5: Solve for x
   x = 610,737,136,480.01/883,131.30
6. Step 6: Final answer
   x = 691,558.70