Finding the Fourth Proportional to 1,721.82, 2,583.72 and 748.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.82 : 2,583.72 = 748.02 : x
2. Step 2: Convert to fraction form
   1,721.82/2,583.72 = 748.02/x
3. Step 3: Cross multiply
   1,721.82x = 2,583.72 × 748.02
4. Step 4: Simplify right side
   1,721.82x = 1,932,674.23
5. Step 5: Solve for x
   x = 1,932,674.23/1,721.82
6. Step 6: Final answer
   x = 1,122.46