Finding the Fourth Proportional to 2,931.87, 4,391.69 and 1,758.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,931.87 : 4,391.69 = 1,758.15 : x
2. Step 2: Convert to fraction form
   2,931.87/4,391.69 = 1,758.15/x
3. Step 3: Cross multiply
   2,931.87x = 4,391.69 × 1,758.15
4. Step 4: Simplify right side
   2,931.87x = 7,721,240.98
5. Step 5: Solve for x
   x = 7,721,240.98/2,931.87
6. Step 6: Final answer
   x = 2,633.56