Finding the Fourth Proportional to 1,182.96, 1,772.82 and 858.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182.96 : 1,772.82 = 858.24 : x
2. Step 2: Convert to fraction form
   1,182.96/1,772.82 = 858.24/x
3. Step 3: Cross multiply
   1,182.96x = 1,772.82 × 858.24
4. Step 4: Simplify right side
   1,182.96x = 1,521,505.04
5. Step 5: Solve for x
   x = 1,521,505.04/1,182.96
6. Step 6: Final answer
   x = 1,286.18