Finding the Fourth Proportional to 2,607.31, 3,891.38 and 2,254.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,607.31 : 3,891.38 = 2,254.35 : x
2. Step 2: Convert to fraction form
   2,607.31/3,891.38 = 2,254.35/x
3. Step 3: Cross multiply
   2,607.31x = 3,891.38 × 2,254.35
4. Step 4: Simplify right side
   2,607.31x = 8,772,532.50
5. Step 5: Solve for x
   x = 8,772,532.50/2,607.31
6. Step 6: Final answer
   x = 3,364.59