Finding the Fourth Proportional to 2,383.93, 3,573.72 and 921.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,383.93 : 3,573.72 = 921.98 : x
2. Step 2: Convert to fraction form
   2,383.93/3,573.72 = 921.98/x
3. Step 3: Cross multiply
   2,383.93x = 3,573.72 × 921.98
4. Step 4: Simplify right side
   2,383.93x = 3,294,907.30
5. Step 5: Solve for x
   x = 3,294,907.30/2,383.93
6. Step 6: Final answer
   x = 1,382.13