Finding the Fourth Proportional to 1,172,040.38, 1,758,128.61 and 452,386.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,172,040.38 : 1,758,128.61 = 452,386.16 : x
2. Step 2: Convert to fraction form
   1,172,040.38/1,758,128.61 = 452,386.16/x
3. Step 3: Cross multiply
   1,172,040.38x = 1,758,128.61 × 452,386.16
4. Step 4: Simplify right side
   1,172,040.38x = 795,353,050,664.04
5. Step 5: Solve for x
   x = 795,353,050,664.04/1,172,040.38
6. Step 6: Final answer
   x = 678,605.50