Finding the Fourth Proportional to 4,989.59, 7,484.61 and 1,868.79

Step by Step Solution

1. Step 1: Write the proportion equation
   4,989.59 : 7,484.61 = 1,868.79 : x
2. Step 2: Convert to fraction form
   4,989.59/7,484.61 = 1,868.79/x
3. Step 3: Cross multiply
   4,989.59x = 7,484.61 × 1,868.79
4. Step 4: Simplify right side
   4,989.59x = 13,987,164.32
5. Step 5: Solve for x
   x = 13,987,164.32/4,989.59
6. Step 6: Final answer
   x = 2,803.27