Finding the Fourth Proportional to 1,865.55, 2,575.67 and 1,158.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.55 : 2,575.67 = 1,158.14 : x
2. Step 2: Convert to fraction form
   1,865.55/2,575.67 = 1,158.14/x
3. Step 3: Cross multiply
   1,865.55x = 2,575.67 × 1,158.14
4. Step 4: Simplify right side
   1,865.55x = 2,982,987.10
5. Step 5: Solve for x
   x = 2,982,987.10/1,865.55
6. Step 6: Final answer
   x = 1,598.98