Finding the Fourth Proportional to 2,877.52, 3,970.83 and 1,618.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.52 : 3,970.83 = 1,618.78 : x
2. Step 2: Convert to fraction form
   2,877.52/3,970.83 = 1,618.78/x
3. Step 3: Cross multiply
   2,877.52x = 3,970.83 × 1,618.78
4. Step 4: Simplify right side
   2,877.52x = 6,427,880.33
5. Step 5: Solve for x
   x = 6,427,880.33/2,877.52
6. Step 6: Final answer
   x = 2,233.83