Finding the Fourth Proportional to 2,085.26, 2,877.55 and 1,153.76

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.26 : 2,877.55 = 1,153.76 : x
2. Step 2: Convert to fraction form
   2,085.26/2,877.55 = 1,153.76/x
3. Step 3: Cross multiply
   2,085.26x = 2,877.55 × 1,153.76
4. Step 4: Simplify right side
   2,085.26x = 3,319,984.82
5. Step 5: Solve for x
   x = 3,319,984.82/2,085.26
6. Step 6: Final answer
   x = 1,592.12