Finding the Fourth Proportional to 1,152.99, 1,726.52 and 858.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,152.99 : 1,726.52 = 858.69 : x
2. Step 2: Convert to fraction form
   1,152.99/1,726.52 = 858.69/x
3. Step 3: Cross multiply
   1,152.99x = 1,726.52 × 858.69
4. Step 4: Simplify right side
   1,152.99x = 1,482,541.17
5. Step 5: Solve for x
   x = 1,482,541.17/1,152.99
6. Step 6: Final answer
   x = 1,285.82