Finding the Fourth Proportional to 1,738.32, 2,398.38 and 1,039.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,738.32 : 2,398.38 = 1,039.56 : x
2. Step 2: Convert to fraction form
   1,738.32/2,398.38 = 1,039.56/x
3. Step 3: Cross multiply
   1,738.32x = 2,398.38 × 1,039.56
4. Step 4: Simplify right side
   1,738.32x = 2,493,259.91
5. Step 5: Solve for x
   x = 2,493,259.91/1,738.32
6. Step 6: Final answer
   x = 1,434.29