Finding the Fourth Proportional to 2,148.84, 2,965.32 and 1,217.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,148.84 : 2,965.32 = 1,217.34 : x
2. Step 2: Convert to fraction form
   2,148.84/2,965.32 = 1,217.34/x
3. Step 3: Cross multiply
   2,148.84x = 2,965.32 × 1,217.34
4. Step 4: Simplify right side
   2,148.84x = 3,609,802.65
5. Step 5: Solve for x
   x = 3,609,802.65/2,148.84
6. Step 6: Final answer
   x = 1,679.88