Finding the Fourth Proportional to 1,261.33, 1,739.89 and 819.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,261.33 : 1,739.89 = 819.52 : x
2. Step 2: Convert to fraction form
   1,261.33/1,739.89 = 819.52/x
3. Step 3: Cross multiply
   1,261.33x = 1,739.89 × 819.52
4. Step 4: Simplify right side
   1,261.33x = 1,425,877.85
5. Step 5: Solve for x
   x = 1,425,877.85/1,261.33
6. Step 6: Final answer
   x = 1,130.46