Finding the Fourth Proportional to 2,113.39, 2,916.45 and 1,169.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,113.39 : 2,916.45 = 1,169.10 : x
2. Step 2: Convert to fraction form
   2,113.39/2,916.45 = 1,169.10/x
3. Step 3: Cross multiply
   2,113.39x = 2,916.45 × 1,169.10
4. Step 4: Simplify right side
   2,113.39x = 3,409,628.25
5. Step 5: Solve for x
   x = 3,409,628.25/2,113.39
6. Step 6: Final answer
   x = 1,613.35