Finding the Fourth Proportional to 1,439.89, 2,158.72 and 562.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,439.89 : 2,158.72 = 562.25 : x
2. Step 2: Convert to fraction form
   1,439.89/2,158.72 = 562.25/x
3. Step 3: Cross multiply
   1,439.89x = 2,158.72 × 562.25
4. Step 4: Simplify right side
   1,439.89x = 1,213,744.31
5. Step 5: Solve for x
   x = 1,213,744.31/1,439.89
6. Step 6: Final answer
   x = 842.94