Finding the Fourth Proportional to 1,300.60, 1,948.42 and 772.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,300.60 : 1,948.42 = 772.38 : x
2. Step 2: Convert to fraction form
   1,300.60/1,948.42 = 772.38/x
3. Step 3: Cross multiply
   1,300.60x = 1,948.42 × 772.38
4. Step 4: Simplify right side
   1,300.60x = 1,504,923.58
5. Step 5: Solve for x
   x = 1,504,923.58/1,300.60
6. Step 6: Final answer
   x = 1,157.10