Finding the Fourth Proportional to 1,499.92, 2,069.84 and 870.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.92 : 2,069.84 = 870.04 : x
2. Step 2: Convert to fraction form
   1,499.92/2,069.84 = 870.04/x
3. Step 3: Cross multiply
   1,499.92x = 2,069.84 × 870.04
4. Step 4: Simplify right side
   1,499.92x = 1,800,843.59
5. Step 5: Solve for x
   x = 1,800,843.59/1,499.92
6. Step 6: Final answer
   x = 1,200.63