Finding the Fourth Proportional to 1,156.18, 1,595.87 and 825.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,156.18 : 1,595.87 = 825.57 : x
2. Step 2: Convert to fraction form
   1,156.18/1,595.87 = 825.57/x
3. Step 3: Cross multiply
   1,156.18x = 1,595.87 × 825.57
4. Step 4: Simplify right side
   1,156.18x = 1,317,502.40
5. Step 5: Solve for x
   x = 1,317,502.40/1,156.18
6. Step 6: Final answer
   x = 1,139.53