Finding the Fourth Proportional to 1,721.71, 2,375.89 and 975.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,721.71 : 2,375.89 = 975.57 : x
2. Step 2: Convert to fraction form
   1,721.71/2,375.89 = 975.57/x
3. Step 3: Cross multiply
   1,721.71x = 2,375.89 × 975.57
4. Step 4: Simplify right side
   1,721.71x = 2,317,847.01
5. Step 5: Solve for x
   x = 2,317,847.01/1,721.71
6. Step 6: Final answer
   x = 1,346.25