Finding the Fourth Proportional to 2,514.18, 3,769.90 and 870.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,514.18 : 3,769.90 = 870.59 : x
2. Step 2: Convert to fraction form
   2,514.18/3,769.90 = 870.59/x
3. Step 3: Cross multiply
   2,514.18x = 3,769.90 × 870.59
4. Step 4: Simplify right side
   2,514.18x = 3,282,037.24
5. Step 5: Solve for x
   x = 3,282,037.24/2,514.18
6. Step 6: Final answer
   x = 1,305.41