Finding the Fourth Proportional to 1,748.31, 2,411.74 and 1,039.65

Step by Step Solution

1. Step 1: Write the proportion equation
   1,748.31 : 2,411.74 = 1,039.65 : x
2. Step 2: Convert to fraction form
   1,748.31/2,411.74 = 1,039.65/x
3. Step 3: Cross multiply
   1,748.31x = 2,411.74 × 1,039.65
4. Step 4: Simplify right side
   1,748.31x = 2,507,363.33
5. Step 5: Solve for x
   x = 2,507,363.33/1,748.31
6. Step 6: Final answer
   x = 1,434.16