Finding the Fourth Proportional to 2,231.60, 3,346.72 and 932.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,231.60 : 3,346.72 = 932.76 : x
2. Step 2: Convert to fraction form
   2,231.60/3,346.72 = 932.76/x
3. Step 3: Cross multiply
   2,231.60x = 3,346.72 × 932.76
4. Step 4: Simplify right side
   2,231.60x = 3,121,686.55
5. Step 5: Solve for x
   x = 3,121,686.55/2,231.60
6. Step 6: Final answer
   x = 1,398.86