Finding the Fourth Proportional to 1,451.04, 2,002.42 and 861.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.04 : 2,002.42 = 861.69 : x
2. Step 2: Convert to fraction form
   1,451.04/2,002.42 = 861.69/x
3. Step 3: Cross multiply
   1,451.04x = 2,002.42 × 861.69
4. Step 4: Simplify right side
   1,451.04x = 1,725,465.29
5. Step 5: Solve for x
   x = 1,725,465.29/1,451.04
6. Step 6: Final answer
   x = 1,189.12