Finding the Fourth Proportional to 1,874.52, 2,586.42 and 1,211.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,874.52 : 2,586.42 = 1,211.28 : x
2. Step 2: Convert to fraction form
   1,874.52/2,586.42 = 1,211.28/x
3. Step 3: Cross multiply
   1,874.52x = 2,586.42 × 1,211.28
4. Step 4: Simplify right side
   1,874.52x = 3,132,878.82
5. Step 5: Solve for x
   x = 3,132,878.82/1,874.52
6. Step 6: Final answer
   x = 1,671.30