Finding the Fourth Proportional to 1,006,146.23, 1,388,355.69 and 680,168.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006,146.23 : 1,388,355.69 = 680,168.50 : x
2. Step 2: Convert to fraction form
   1,006,146.23/1,388,355.69 = 680,168.50/x
3. Step 3: Cross multiply
   1,006,146.23x = 1,388,355.69 × 680,168.50
4. Step 4: Simplify right side
   1,006,146.23x = 944,315,807,133.77
5. Step 5: Solve for x
   x = 944,315,807,133.77/1,006,146.23
6. Step 6: Final answer
   x = 938,547.28