Finding the Fourth Proportional to 1,301.56, 1,795.95 and 770.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,301.56 : 1,795.95 = 770.15 : x
2. Step 2: Convert to fraction form
   1,301.56/1,795.95 = 770.15/x
3. Step 3: Cross multiply
   1,301.56x = 1,795.95 × 770.15
4. Step 4: Simplify right side
   1,301.56x = 1,383,150.89
5. Step 5: Solve for x
   x = 1,383,150.89/1,301.56
6. Step 6: Final answer
   x = 1,062.69