Finding the Fourth Proportional to 2,302.89, 3,178.05 and 1,255.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,302.89 : 3,178.05 = 1,255.02 : x
2. Step 2: Convert to fraction form
   2,302.89/3,178.05 = 1,255.02/x
3. Step 3: Cross multiply
   2,302.89x = 3,178.05 × 1,255.02
4. Step 4: Simplify right side
   2,302.89x = 3,988,516.31
5. Step 5: Solve for x
   x = 3,988,516.31/2,302.89
6. Step 6: Final answer
   x = 1,731.96