Finding the Fourth Proportional to 2,499.02, 3,448.61 and 1,380

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.02 : 3,448.61 = 1,380 : x
2. Step 2: Convert to fraction form
   2,499.02/3,448.61 = 1,380/x
3. Step 3: Cross multiply
   2,499.02x = 3,448.61 × 1,380
4. Step 4: Simplify right side
   2,499.02x = 4,759,074.90
5. Step 5: Solve for x
   x = 4,759,074.90/2,499.02
6. Step 6: Final answer
   x = 1,904.38