Finding the Fourth Proportional to 2,359.25, 3,538.32 and 971.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,359.25 : 3,538.32 = 971.21 : x
2. Step 2: Convert to fraction form
   2,359.25/3,538.32 = 971.21/x
3. Step 3: Cross multiply
   2,359.25x = 3,538.32 × 971.21
4. Step 4: Simplify right side
   2,359.25x = 3,436,451.77
5. Step 5: Solve for x
   x = 3,436,451.77/2,359.25
6. Step 6: Final answer
   x = 1,456.59