Finding the Fourth Proportional to 1,499.13, 2,068.82 and 869.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.13 : 2,068.82 = 869.79 : x
2. Step 2: Convert to fraction form
   1,499.13/2,068.82 = 869.79/x
3. Step 3: Cross multiply
   1,499.13x = 2,068.82 × 869.79
4. Step 4: Simplify right side
   1,499.13x = 1,799,434.60
5. Step 5: Solve for x
   x = 1,799,434.60/1,499.13
6. Step 6: Final answer
   x = 1,200.32