Finding the Fourth Proportional to 1,142,662.53, 1,576,864.01 and 626,445.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142,662.53 : 1,576,864.01 = 626,445.89 : x
2. Step 2: Convert to fraction form
   1,142,662.53/1,576,864.01 = 626,445.89/x
3. Step 3: Cross multiply
   1,142,662.53x = 1,576,864.01 × 626,445.89
4. Step 4: Simplify right side
   1,142,662.53x = 987,819,967,136.87
5. Step 5: Solve for x
   x = 987,819,967,136.87/1,142,662.53
6. Step 6: Final answer
   x = 864,489.68