Finding the Fourth Proportional to 1,997.90, 2,982.06 and 1,874.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,997.90 : 2,982.06 = 1,874.78 : x
2. Step 2: Convert to fraction form
   1,997.90/2,982.06 = 1,874.78/x
3. Step 3: Cross multiply
   1,997.90x = 2,982.06 × 1,874.78
4. Step 4: Simplify right side
   1,997.90x = 5,590,706.45
5. Step 5: Solve for x
   x = 5,590,706.45/1,997.90
6. Step 6: Final answer
   x = 2,798.29