Finding the Fourth Proportional to 2,079.79, 2,870.03 and 1,135.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,079.79 : 2,870.03 = 1,135.55 : x
2. Step 2: Convert to fraction form
   2,079.79/2,870.03 = 1,135.55/x
3. Step 3: Cross multiply
   2,079.79x = 2,870.03 × 1,135.55
4. Step 4: Simplify right side
   2,079.79x = 3,259,072.58
5. Step 5: Solve for x
   x = 3,259,072.58/2,079.79
6. Step 6: Final answer
   x = 1,567.02