Finding the Fourth Proportional to 2,817.38, 3,889.55 and 1,874.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,817.38 : 3,889.55 = 1,874.45 : x
2. Step 2: Convert to fraction form
   2,817.38/3,889.55 = 1,874.45/x
3. Step 3: Cross multiply
   2,817.38x = 3,889.55 × 1,874.45
4. Step 4: Simplify right side
   2,817.38x = 7,290,781.41
5. Step 5: Solve for x
   x = 7,290,781.41/2,817.38
6. Step 6: Final answer
   x = 2,587.79