Finding the Fourth Proportional to 1,041.54, 1,557.69 and 926.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,041.54 : 1,557.69 = 926.79 : x
2. Step 2: Convert to fraction form
   1,041.54/1,557.69 = 926.79/x
3. Step 3: Cross multiply
   1,041.54x = 1,557.69 × 926.79
4. Step 4: Simplify right side
   1,041.54x = 1,443,651.52
5. Step 5: Solve for x
   x = 1,443,651.52/1,041.54
6. Step 6: Final answer
   x = 1,386.07