Finding the Fourth Proportional to 2,891.10, 4,333.55 and 1,248.42

Step by Step Solution

1. Step 1: Write the proportion equation
   2,891.10 : 4,333.55 = 1,248.42 : x
2. Step 2: Convert to fraction form
   2,891.10/4,333.55 = 1,248.42/x
3. Step 3: Cross multiply
   2,891.10x = 4,333.55 × 1,248.42
4. Step 4: Simplify right side
   2,891.10x = 5,410,084.25
5. Step 5: Solve for x
   x = 5,410,084.25/2,891.10
6. Step 6: Final answer
   x = 1,871.29