Finding the Fourth Proportional to 1,142,406.05, 1,576,485.89 and 626,148.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142,406.05 : 1,576,485.89 = 626,148.70 : x
2. Step 2: Convert to fraction form
   1,142,406.05/1,576,485.89 = 626,148.70/x
3. Step 3: Cross multiply
   1,142,406.05x = 1,576,485.89 × 626,148.70
4. Step 4: Simplify right side
   1,142,406.05x = 987,114,585,867.94
5. Step 5: Solve for x
   x = 987,114,585,867.94/1,142,406.05
6. Step 6: Final answer
   x = 864,066.32