Finding the Fourth Proportional to 2,079.57, 2,869.72 and 1,135.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.57 : 2,869.72 = 1,135.34 : x
2. Step 2: Convert to fraction form
   2,079.57/2,869.72 = 1,135.34/x
3. Step 3: Cross multiply
   2,079.57x = 2,869.72 × 1,135.34
4. Step 4: Simplify right side
   2,079.57x = 3,258,112.24
5. Step 5: Solve for x
   x = 3,258,112.24/2,079.57
6. Step 6: Final answer
   x = 1,566.72