Finding the Fourth Proportional to 2,280.54, 3,145.32 and 1,533.99

Step by Step Solution

1. Step 1: Write the proportion equation
   2,280.54 : 3,145.32 = 1,533.99 : x
2. Step 2: Convert to fraction form
   2,280.54/3,145.32 = 1,533.99/x
3. Step 3: Cross multiply
   2,280.54x = 3,145.32 × 1,533.99
4. Step 4: Simplify right side
   2,280.54x = 4,824,889.43
5. Step 5: Solve for x
   x = 4,824,889.43/2,280.54
6. Step 6: Final answer
   x = 2,115.68