Finding the Fourth Proportional to 1,452.78, 2,005.00 and 921.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,452.78 : 2,005.00 = 921.83 : x
2. Step 2: Convert to fraction form
   1,452.78/2,005.00 = 921.83/x
3. Step 3: Cross multiply
   1,452.78x = 2,005.00 × 921.83
4. Step 4: Simplify right side
   1,452.78x = 1,848,256.82
5. Step 5: Solve for x
   x = 1,848,256.82/1,452.78
6. Step 6: Final answer
   x = 1,272.22