Finding the Fourth Proportional to 1,584.83, 2,375.89 and 1,121.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,584.83 : 2,375.89 = 1,121.15 : x
2. Step 2: Convert to fraction form
   1,584.83/2,375.89 = 1,121.15/x
3. Step 3: Cross multiply
   1,584.83x = 2,375.89 × 1,121.15
4. Step 4: Simplify right side
   1,584.83x = 2,663,714.39
5. Step 5: Solve for x
   x = 2,663,714.39/1,584.83
6. Step 6: Final answer
   x = 1,680.76