Finding the Fourth Proportional to 2,259.57, 3,388.04 and 699.15

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259.57 : 3,388.04 = 699.15 : x
2. Step 2: Convert to fraction form
   2,259.57/3,388.04 = 699.15/x
3. Step 3: Cross multiply
   2,259.57x = 3,388.04 × 699.15
4. Step 4: Simplify right side
   2,259.57x = 2,368,748.17
5. Step 5: Solve for x
   x = 2,368,748.17/2,259.57
6. Step 6: Final answer
   x = 1,048.32