Finding the Fourth Proportional to 1,721.28, 2,374.83 and 975.18

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.28 : 2,374.83 = 975.18 : x
2. Step 2: Convert to fraction form
   1,721.28/2,374.83 = 975.18/x
3. Step 3: Cross multiply
   1,721.28x = 2,374.83 × 975.18
4. Step 4: Simplify right side
   1,721.28x = 2,315,886.72
5. Step 5: Solve for x
   x = 2,315,886.72/1,721.28
6. Step 6: Final answer
   x = 1,345.44