Finding the Fourth Proportional to 1,276.52, 1,915.59 and 546.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,276.52 : 1,915.59 = 546.09 : x
2. Step 2: Convert to fraction form
   1,276.52/1,915.59 = 546.09/x
3. Step 3: Cross multiply
   1,276.52x = 1,915.59 × 546.09
4. Step 4: Simplify right side
   1,276.52x = 1,046,088.65
5. Step 5: Solve for x
   x = 1,046,088.65/1,276.52
6. Step 6: Final answer
   x = 819.49