Finding the Fourth Proportional to 2,335.80, 3,502.79 and 874.16

Step by Step Solution

1. Step 1: Write the proportion equation
   2,335.80 : 3,502.79 = 874.16 : x
2. Step 2: Convert to fraction form
   2,335.80/3,502.79 = 874.16/x
3. Step 3: Cross multiply
   2,335.80x = 3,502.79 × 874.16
4. Step 4: Simplify right side
   2,335.80x = 3,061,998.91
5. Step 5: Solve for x
   x = 3,061,998.91/2,335.80
6. Step 6: Final answer
   x = 1,310.90