Finding the Fourth Proportional to 1,744.89, 2,612.86 and 921.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,744.89 : 2,612.86 = 921.32 : x
2. Step 2: Convert to fraction form
   1,744.89/2,612.86 = 921.32/x
3. Step 3: Cross multiply
   1,744.89x = 2,612.86 × 921.32
4. Step 4: Simplify right side
   1,744.89x = 2,407,289.30
5. Step 5: Solve for x
   x = 2,407,289.30/1,744.89
6. Step 6: Final answer
   x = 1,379.62