Finding the Fourth Proportional to 2,877.30, 3,970.71 and 1,618.38

Step by Step Solution

1. Step 1: Write the proportion equation
   2,877.30 : 3,970.71 = 1,618.38 : x
2. Step 2: Convert to fraction form
   2,877.30/3,970.71 = 1,618.38/x
3. Step 3: Cross multiply
   2,877.30x = 3,970.71 × 1,618.38
4. Step 4: Simplify right side
   2,877.30x = 6,426,117.65
5. Step 5: Solve for x
   x = 6,426,117.65/2,877.30
6. Step 6: Final answer
   x = 2,233.38