Finding the Fourth Proportional to 3,510.56, 5,266.15 and 913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,510.56 : 5,266.15 = 913.50 : x
2. Step 2: Convert to fraction form
   3,510.56/5,266.15 = 913.50/x
3. Step 3: Cross multiply
   3,510.56x = 5,266.15 × 913.50
4. Step 4: Simplify right side
   3,510.56x = 4,810,625.74
5. Step 5: Solve for x
   x = 4,810,625.74/3,510.56
6. Step 6: Final answer
   x = 1,370.33