Finding the Fourth Proportional to 2,085.88, 2,878.58 and 1,154.36

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.88 : 2,878.58 = 1,154.36 : x
2. Step 2: Convert to fraction form
   2,085.88/2,878.58 = 1,154.36/x
3. Step 3: Cross multiply
   2,085.88x = 2,878.58 × 1,154.36
4. Step 4: Simplify right side
   2,085.88x = 3,322,917.61
5. Step 5: Solve for x
   x = 3,322,917.61/2,085.88
6. Step 6: Final answer
   x = 1,593.05