Finding the Fourth Proportional to 1,182.81, 1,766.15 and 1,058.61

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.81 : 1,766.15 = 1,058.61 : x
2. Step 2: Convert to fraction form
   1,182.81/1,766.15 = 1,058.61/x
3. Step 3: Cross multiply
   1,182.81x = 1,766.15 × 1,058.61
4. Step 4: Simplify right side
   1,182.81x = 1,869,666.70
5. Step 5: Solve for x
   x = 1,869,666.70/1,182.81
6. Step 6: Final answer
   x = 1,580.70