Finding the Fourth Proportional to 2,430.18, 3,645.33 and 870.29

Step by Step Solution

1. Step 1: Write the proportion equation
   2,430.18 : 3,645.33 = 870.29 : x
2. Step 2: Convert to fraction form
   2,430.18/3,645.33 = 870.29/x
3. Step 3: Cross multiply
   2,430.18x = 3,645.33 × 870.29
4. Step 4: Simplify right side
   2,430.18x = 3,172,500.10
5. Step 5: Solve for x
   x = 3,172,500.10/2,430.18
6. Step 6: Final answer
   x = 1,305.46