Finding the Fourth Proportional to 1,426.56, 2,140.78 and 502.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,426.56 : 2,140.78 = 502.10 : x
2. Step 2: Convert to fraction form
   1,426.56/2,140.78 = 502.10/x
3. Step 3: Cross multiply
   1,426.56x = 2,140.78 × 502.10
4. Step 4: Simplify right side
   1,426.56x = 1,074,882.65
5. Step 5: Solve for x
   x = 1,074,882.65/1,426.56
6. Step 6: Final answer
   x = 753.48