Finding the Fourth Proportional to 1,585.72, 2,188.38 and 996.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585.72 : 2,188.38 = 996.04 : x
2. Step 2: Convert to fraction form
   1,585.72/2,188.38 = 996.04/x
3. Step 3: Cross multiply
   1,585.72x = 2,188.38 × 996.04
4. Step 4: Simplify right side
   1,585.72x = 2,179,714.02
5. Step 5: Solve for x
   x = 2,179,714.02/1,585.72
6. Step 6: Final answer
   x = 1,374.59