Finding the Fourth Proportional to 2,878.72, 4,320.18 and 1,147.84

Step by Step Solution

1. Step 1: Write the proportion equation
   2,878.72 : 4,320.18 = 1,147.84 : x
2. Step 2: Convert to fraction form
   2,878.72/4,320.18 = 1,147.84/x
3. Step 3: Cross multiply
   2,878.72x = 4,320.18 × 1,147.84
4. Step 4: Simplify right side
   2,878.72x = 4,958,875.41
5. Step 5: Solve for x
   x = 4,958,875.41/2,878.72
6. Step 6: Final answer
   x = 1,722.60