Finding the Fourth Proportional to 1,758.57, 2,426.90 and 1,012.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.57 : 2,426.90 = 1,012.51 : x
2. Step 2: Convert to fraction form
   1,758.57/2,426.90 = 1,012.51/x
3. Step 3: Cross multiply
   1,758.57x = 2,426.90 × 1,012.51
4. Step 4: Simplify right side
   1,758.57x = 2,457,260.52
5. Step 5: Solve for x
   x = 2,457,260.52/1,758.57
6. Step 6: Final answer
   x = 1,397.31