Finding the Fourth Proportional to 1,807.62, 2,493.82 and 1,217.22

Step by Step Solution

1. Step 1: Write the proportion equation
   1,807.62 : 2,493.82 = 1,217.22 : x
2. Step 2: Convert to fraction form
   1,807.62/2,493.82 = 1,217.22/x
3. Step 3: Cross multiply
   1,807.62x = 2,493.82 × 1,217.22
4. Step 4: Simplify right side
   1,807.62x = 3,035,527.58
5. Step 5: Solve for x
   x = 3,035,527.58/1,807.62
6. Step 6: Final answer
   x = 1,679.30