Finding the Fourth Proportional to 2,080.22, 2,870.70 and 1,148.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,080.22 : 2,870.70 = 1,148.72 : x
2. Step 2: Convert to fraction form
   2,080.22/2,870.70 = 1,148.72/x
3. Step 3: Cross multiply
   2,080.22x = 2,870.70 × 1,148.72
4. Step 4: Simplify right side
   2,080.22x = 3,297,630.50
5. Step 5: Solve for x
   x = 3,297,630.50/2,080.22
6. Step 6: Final answer
   x = 1,585.23