Finding the Fourth Proportional to 1,539.72, 2,124.82 and 841.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,539.72 : 2,124.82 = 841.16 : x
2. Step 2: Convert to fraction form
   1,539.72/2,124.82 = 841.16/x
3. Step 3: Cross multiply
   1,539.72x = 2,124.82 × 841.16
4. Step 4: Simplify right side
   1,539.72x = 1,787,313.59
5. Step 5: Solve for x
   x = 1,787,313.59/1,539.72
6. Step 6: Final answer
   x = 1,160.80