Finding the Fourth Proportional to 2,302.55, 3,178.11 and 1,308.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,302.55 : 3,178.11 = 1,308.15 : x
2. Step 2: Convert to fraction form
   2,302.55/3,178.11 = 1,308.15/x
3. Step 3: Cross multiply
   2,302.55x = 3,178.11 × 1,308.15
4. Step 4: Simplify right side
   2,302.55x = 4,157,445.82
5. Step 5: Solve for x
   x = 4,157,445.82/2,302.55
6. Step 6: Final answer
   x = 1,805.58