Finding the Fourth Proportional to 3,510.90, 5,266.31 and 1,047.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,510.90 : 5,266.31 = 1,047.42 : x
2. Step 2: Convert to fraction form
   3,510.90/5,266.31 = 1,047.42/x
3. Step 3: Cross multiply
   3,510.90x = 5,266.31 × 1,047.42
4. Step 4: Simplify right side
   3,510.90x = 5,516,033.18
5. Step 5: Solve for x
   x = 5,516,033.18/3,510.90
6. Step 6: Final answer
   x = 1,571.12