Finding the Fourth Proportional to 1,758.43, 2,426.79 and 972.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.43 : 2,426.79 = 972.55 : x
2. Step 2: Convert to fraction form
   1,758.43/2,426.79 = 972.55/x
3. Step 3: Cross multiply
   1,758.43x = 2,426.79 × 972.55
4. Step 4: Simplify right side
   1,758.43x = 2,360,174.61
5. Step 5: Solve for x
   x = 2,360,174.61/1,758.43
6. Step 6: Final answer
   x = 1,342.21