Finding the Fourth Proportional to 1,150.12, 1,587.19 and 652.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,150.12 : 1,587.19 = 652.78 : x
2. Step 2: Convert to fraction form
   1,150.12/1,587.19 = 652.78/x
3. Step 3: Cross multiply
   1,150.12x = 1,587.19 × 652.78
4. Step 4: Simplify right side
   1,150.12x = 1,036,085.89
5. Step 5: Solve for x
   x = 1,036,085.89/1,150.12
6. Step 6: Final answer
   x = 900.85