Finding the Fourth Proportional to 1,715.61, 2,366.90 and 1,268.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,715.61 : 2,366.90 = 1,268.55 : x
2. Step 2: Convert to fraction form
   1,715.61/2,366.90 = 1,268.55/x
3. Step 3: Cross multiply
   1,715.61x = 2,366.90 × 1,268.55
4. Step 4: Simplify right side
   1,715.61x = 3,002,524.65
5. Step 5: Solve for x
   x = 3,002,524.65/1,715.61
6. Step 6: Final answer
   x = 1,750.12