Finding the Fourth Proportional to 2,087.78, 2,881.17 and 1,156.22

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.78 : 2,881.17 = 1,156.22 : x
2. Step 2: Convert to fraction form
   2,087.78/2,881.17 = 1,156.22/x
3. Step 3: Cross multiply
   2,087.78x = 2,881.17 × 1,156.22
4. Step 4: Simplify right side
   2,087.78x = 3,331,266.38
5. Step 5: Solve for x
   x = 3,331,266.38/2,087.78
6. Step 6: Final answer
   x = 1,595.60