Finding the Fourth Proportional to 2,391.48, 3,298.98 and 1,551.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,391.48 : 3,298.98 = 1,551.06 : x
2. Step 2: Convert to fraction form
   2,391.48/3,298.98 = 1,551.06/x
3. Step 3: Cross multiply
   2,391.48x = 3,298.98 × 1,551.06
4. Step 4: Simplify right side
   2,391.48x = 5,116,915.92
5. Step 5: Solve for x
   x = 5,116,915.92/2,391.48
6. Step 6: Final answer
   x = 2,139.64