Finding the Fourth Proportional to 1,758.88, 2,426.94 and 1,012.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.88 : 2,426.94 = 1,012.80 : x
2. Step 2: Convert to fraction form
   1,758.88/2,426.94 = 1,012.80/x
3. Step 3: Cross multiply
   1,758.88x = 2,426.94 × 1,012.80
4. Step 4: Simplify right side
   1,758.88x = 2,457,990.61
5. Step 5: Solve for x
   x = 2,457,990.61/1,758.88
6. Step 6: Final answer
   x = 1,397.47