Finding the Fourth Proportional to 1,499.52, 2,068.79 and 869.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.52 : 2,068.79 = 869.70 : x
2. Step 2: Convert to fraction form
   1,499.52/2,068.79 = 869.70/x
3. Step 3: Cross multiply
   1,499.52x = 2,068.79 × 869.70
4. Step 4: Simplify right side
   1,499.52x = 1,799,211.97
5. Step 5: Solve for x
   x = 1,799,211.97/1,499.52
6. Step 6: Final answer
   x = 1,199.86