Finding the Fourth Proportional to 1,585.01, 2,187.25 and 921.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,585.01 : 2,187.25 = 921.83 : x
2. Step 2: Convert to fraction form
   1,585.01/2,187.25 = 921.83/x
3. Step 3: Cross multiply
   1,585.01x = 2,187.25 × 921.83
4. Step 4: Simplify right side
   1,585.01x = 2,016,259.43
5. Step 5: Solve for x
   x = 2,016,259.43/1,585.01
6. Step 6: Final answer
   x = 1,272.08