Finding the Fourth Proportional to 2,113.59, 2,916.32 and 1,229.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.59 : 2,916.32 = 1,229.34 : x
2. Step 2: Convert to fraction form
   2,113.59/2,916.32 = 1,229.34/x
3. Step 3: Cross multiply
   2,113.59x = 2,916.32 × 1,229.34
4. Step 4: Simplify right side
   2,113.59x = 3,585,142.68
5. Step 5: Solve for x
   x = 3,585,142.68/2,113.59
6. Step 6: Final answer
   x = 1,696.23