Finding the Fourth Proportional to 2,380.51, 3,568.72 and 1,148.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,380.51 : 3,568.72 = 1,148.78 : x
2. Step 2: Convert to fraction form
   2,380.51/3,568.72 = 1,148.78/x
3. Step 3: Cross multiply
   2,380.51x = 3,568.72 × 1,148.78
4. Step 4: Simplify right side
   2,380.51x = 4,099,679.13
5. Step 5: Solve for x
   x = 4,099,679.13/2,380.51
6. Step 6: Final answer
   x = 1,722.18