Finding the Fourth Proportional to 1,393.50, 1,924.66 and 1,082.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,393.50 : 1,924.66 = 1,082.57 : x
2. Step 2: Convert to fraction form
   1,393.50/1,924.66 = 1,082.57/x
3. Step 3: Cross multiply
   1,393.50x = 1,924.66 × 1,082.57
4. Step 4: Simplify right side
   1,393.50x = 2,083,570.91
5. Step 5: Solve for x
   x = 2,083,570.91/1,393.50
6. Step 6: Final answer
   x = 1,495.20