Finding the Fourth Proportional to 1,665.36, 2,494.86 and 932.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.36 : 2,494.86 = 932.72 : x
2. Step 2: Convert to fraction form
   1,665.36/2,494.86 = 932.72/x
3. Step 3: Cross multiply
   1,665.36x = 2,494.86 × 932.72
4. Step 4: Simplify right side
   1,665.36x = 2,327,005.82
5. Step 5: Solve for x
   x = 2,327,005.82/1,665.36
6. Step 6: Final answer
   x = 1,397.30