Finding the Fourth Proportional to 1,865.38, 2,571.61 and 1,807.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865.38 : 2,571.61 = 1,807.94 : x
2. Step 2: Convert to fraction form
   1,865.38/2,571.61 = 1,807.94/x
3. Step 3: Cross multiply
   1,865.38x = 2,571.61 × 1,807.94
4. Step 4: Simplify right side
   1,865.38x = 4,649,316.58
5. Step 5: Solve for x
   x = 4,649,316.58/1,865.38
6. Step 6: Final answer
   x = 2,492.42