Finding the Fourth Proportional to 1,942.42, 2,913.55 and 772.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,942.42 : 2,913.55 = 772.37 : x
2. Step 2: Convert to fraction form
   1,942.42/2,913.55 = 772.37/x
3. Step 3: Cross multiply
   1,942.42x = 2,913.55 × 772.37
4. Step 4: Simplify right side
   1,942.42x = 2,250,338.50
5. Step 5: Solve for x
   x = 2,250,338.50/1,942.42
6. Step 6: Final answer
   x = 1,158.53