Finding the Fourth Proportional to 2,499.18, 3,448.75 and 1,380.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499.18 : 3,448.75 = 1,380.06 : x
2. Step 2: Convert to fraction form
   2,499.18/3,448.75 = 1,380.06/x
3. Step 3: Cross multiply
   2,499.18x = 3,448.75 × 1,380.06
4. Step 4: Simplify right side
   2,499.18x = 4,759,494.64
5. Step 5: Solve for x
   x = 4,759,494.64/2,499.18
6. Step 6: Final answer
   x = 1,904.42