Finding the Fourth Proportional to 1,705.50, 2,353.86 and 1,042.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,705.50 : 2,353.86 = 1,042.74 : x
2. Step 2: Convert to fraction form
   1,705.50/2,353.86 = 1,042.74/x
3. Step 3: Cross multiply
   1,705.50x = 2,353.86 × 1,042.74
4. Step 4: Simplify right side
   1,705.50x = 2,454,463.98
5. Step 5: Solve for x
   x = 2,454,463.98/1,705.50
6. Step 6: Final answer
   x = 1,439.15