Finding the Fourth Proportional to 3,630.30, 5,447.25 and 1,438.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,630.30 : 5,447.25 = 1,438.98 : x
2. Step 2: Convert to fraction form
   3,630.30/5,447.25 = 1,438.98/x
3. Step 3: Cross multiply
   3,630.30x = 5,447.25 × 1,438.98
4. Step 4: Simplify right side
   3,630.30x = 7,838,483.81
5. Step 5: Solve for x
   x = 7,838,483.81/3,630.30
6. Step 6: Final answer
   x = 2,159.18