Finding the Fourth Proportional to 1,061.78, 1,592.33 and 541.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,061.78 : 1,592.33 = 541.69 : x
2. Step 2: Convert to fraction form
   1,061.78/1,592.33 = 541.69/x
3. Step 3: Cross multiply
   1,061.78x = 1,592.33 × 541.69
4. Step 4: Simplify right side
   1,061.78x = 862,542.55
5. Step 5: Solve for x
   x = 862,542.55/1,061.78
6. Step 6: Final answer
   x = 812.36