Finding the Fourth Proportional to 1,677.33, 2,315.30 and 1,039.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,677.33 : 2,315.30 = 1,039.76 : x
2. Step 2: Convert to fraction form
   1,677.33/2,315.30 = 1,039.76/x
3. Step 3: Cross multiply
   1,677.33x = 2,315.30 × 1,039.76
4. Step 4: Simplify right side
   1,677.33x = 2,407,339.55
5. Step 5: Solve for x
   x = 2,407,339.55/1,677.33
6. Step 6: Final answer
   x = 1,435.22