Finding the Fourth Proportional to 1,077.55, 1,612.68 and 895.30

Step by Step Solution

1. Step 1: Write the proportion equation
   1,077.55 : 1,612.68 = 895.30 : x
2. Step 2: Convert to fraction form
   1,077.55/1,612.68 = 895.30/x
3. Step 3: Cross multiply
   1,077.55x = 1,612.68 × 895.30
4. Step 4: Simplify right side
   1,077.55x = 1,443,832.40
5. Step 5: Solve for x
   x = 1,443,832.40/1,077.55
6. Step 6: Final answer
   x = 1,339.92