Finding the Fourth Proportional to 2,225.79, 3,071.50 and 1,217.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,225.79 : 3,071.50 = 1,217.48 : x
2. Step 2: Convert to fraction form
   2,225.79/3,071.50 = 1,217.48/x
3. Step 3: Cross multiply
   2,225.79x = 3,071.50 × 1,217.48
4. Step 4: Simplify right side
   2,225.79x = 3,739,489.82
5. Step 5: Solve for x
   x = 3,739,489.82/2,225.79
6. Step 6: Final answer
   x = 1,680.07