Finding the Fourth Proportional to 1,499.16, 2,068.61 and 869.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.16 : 2,068.61 = 869.18 : x
2. Step 2: Convert to fraction form
   1,499.16/2,068.61 = 869.18/x
3. Step 3: Cross multiply
   1,499.16x = 2,068.61 × 869.18
4. Step 4: Simplify right side
   1,499.16x = 1,797,998.72
5. Step 5: Solve for x
   x = 1,797,998.72/1,499.16
6. Step 6: Final answer
   x = 1,199.34