Finding the Fourth Proportional to 1,758.72, 2,426.70 and 1,012.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,758.72 : 2,426.70 = 1,012.56 : x
2. Step 2: Convert to fraction form
   1,758.72/2,426.70 = 1,012.56/x
3. Step 3: Cross multiply
   1,758.72x = 2,426.70 × 1,012.56
4. Step 4: Simplify right side
   1,758.72x = 2,457,179.35
5. Step 5: Solve for x
   x = 2,457,179.35/1,758.72
6. Step 6: Final answer
   x = 1,397.14