Finding the Fourth Proportional to 1,874.40, 2,585.52 and 1,174.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,874.40 : 2,585.52 = 1,174.56 : x
2. Step 2: Convert to fraction form
   1,874.40/2,585.52 = 1,174.56/x
3. Step 3: Cross multiply
   1,874.40x = 2,585.52 × 1,174.56
4. Step 4: Simplify right side
   1,874.40x = 3,036,848.37
5. Step 5: Solve for x
   x = 3,036,848.37/1,874.40
6. Step 6: Final answer
   x = 1,620.17