Finding the Fourth Proportional to 2,484.50, 3,728.57 and 1,391.00

Step by Step Solution

1. Step 1: Write the proportion equation
   2,484.50 : 3,728.57 = 1,391.00 : x
2. Step 2: Convert to fraction form
   2,484.50/3,728.57 = 1,391.00/x
3. Step 3: Cross multiply
   2,484.50x = 3,728.57 × 1,391.00
4. Step 4: Simplify right side
   2,484.50x = 5,186,415.27
5. Step 5: Solve for x
   x = 5,186,415.27/2,484.50
6. Step 6: Final answer
   x = 2,087.51