Finding the Fourth Proportional to 1,200,693.42, 1,656,996.39 and 684,438.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,693.42 : 1,656,996.39 = 684,438.12 : x
2. Step 2: Convert to fraction form
   1,200,693.42/1,656,996.39 = 684,438.12/x
3. Step 3: Cross multiply
   1,200,693.42x = 1,656,996.39 × 684,438.12
4. Step 4: Simplify right side
   1,200,693.42x = 1,134,111,494,018.39
5. Step 5: Solve for x
   x = 1,134,111,494,018.39/1,200,693.42
6. Step 6: Final answer
   x = 944,547.11