Finding the Fourth Proportional to 1,874.88, 2,586.15 and 1,167.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,874.88 : 2,586.15 = 1,167.12 : x
2. Step 2: Convert to fraction form
   1,874.88/2,586.15 = 1,167.12/x
3. Step 3: Cross multiply
   1,874.88x = 2,586.15 × 1,167.12
4. Step 4: Simplify right side
   1,874.88x = 3,018,347.39
5. Step 5: Solve for x
   x = 3,018,347.39/1,874.88
6. Step 6: Final answer
   x = 1,609.89