Finding the Fourth Proportional to 2,577.40, 3,865.67 and 934.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,577.40 : 3,865.67 = 934.72 : x
2. Step 2: Convert to fraction form
   2,577.40/3,865.67 = 934.72/x
3. Step 3: Cross multiply
   2,577.40x = 3,865.67 × 934.72
4. Step 4: Simplify right side
   2,577.40x = 3,613,319.06
5. Step 5: Solve for x
   x = 3,613,319.06/2,577.40
6. Step 6: Final answer
   x = 1,401.92