Finding the Fourth Proportional to 1,499.41, 2,069.19 and 870.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.41 : 2,069.19 = 870.06 : x
2. Step 2: Convert to fraction form
   1,499.41/2,069.19 = 870.06/x
3. Step 3: Cross multiply
   1,499.41x = 2,069.19 × 870.06
4. Step 4: Simplify right side
   1,499.41x = 1,800,319.45
5. Step 5: Solve for x
   x = 1,800,319.45/1,499.41
6. Step 6: Final answer
   x = 1,200.69