Finding the Fourth Proportional to 1,915.74, 2,643.14 and 1,169.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,915.74 : 2,643.14 = 1,169.46 : x
2. Step 2: Convert to fraction form
   1,915.74/2,643.14 = 1,169.46/x
3. Step 3: Cross multiply
   1,915.74x = 2,643.14 × 1,169.46
4. Step 4: Simplify right side
   1,915.74x = 3,091,046.50
5. Step 5: Solve for x
   x = 3,091,046.50/1,915.74
6. Step 6: Final answer
   x = 1,613.50