Finding the Fourth Proportional to 2,762.73, 4,143.69 and 913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,762.73 : 4,143.69 = 913.50 : x
2. Step 2: Convert to fraction form
   2,762.73/4,143.69 = 913.50/x
3. Step 3: Cross multiply
   2,762.73x = 4,143.69 × 913.50
4. Step 4: Simplify right side
   2,762.73x = 3,785,260.82
5. Step 5: Solve for x
   x = 3,785,260.82/2,762.73
6. Step 6: Final answer
   x = 1,370.12