Finding the Fourth Proportional to 1,347.06, 1,859.04 and 757.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,347.06 : 1,859.04 = 757.78 : x
2. Step 2: Convert to fraction form
   1,347.06/1,859.04 = 757.78/x
3. Step 3: Cross multiply
   1,347.06x = 1,859.04 × 757.78
4. Step 4: Simplify right side
   1,347.06x = 1,408,743.33
5. Step 5: Solve for x
   x = 1,408,743.33/1,347.06
6. Step 6: Final answer
   x = 1,045.79