Finding the Fourth Proportional to 2,285.02, 3,152.81 and 1,388.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,285.02 : 3,152.81 = 1,388.48 : x
2. Step 2: Convert to fraction form
   2,285.02/3,152.81 = 1,388.48/x
3. Step 3: Cross multiply
   2,285.02x = 3,152.81 × 1,388.48
4. Step 4: Simplify right side
   2,285.02x = 4,377,606.69
5. Step 5: Solve for x
   x = 4,377,606.69/2,285.02
6. Step 6: Final answer
   x = 1,915.79