Finding the Fourth Proportional to 3,437.31, 5,156.01 and 972.21

Step by Step Solution

1. Step 1: Write the proportion equation
   3,437.31 : 5,156.01 = 972.21 : x
2. Step 2: Convert to fraction form
   3,437.31/5,156.01 = 972.21/x
3. Step 3: Cross multiply
   3,437.31x = 5,156.01 × 972.21
4. Step 4: Simplify right side
   3,437.31x = 5,012,724.48
5. Step 5: Solve for x
   x = 5,012,724.48/3,437.31
6. Step 6: Final answer
   x = 1,458.33