Finding the Fourth Proportional to 1,900.79, 2,851.22 and 912.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,900.79 : 2,851.22 = 912.52 : x
2. Step 2: Convert to fraction form
   1,900.79/2,851.22 = 912.52/x
3. Step 3: Cross multiply
   1,900.79x = 2,851.22 × 912.52
4. Step 4: Simplify right side
   1,900.79x = 2,601,795.27
5. Step 5: Solve for x
   x = 2,601,795.27/1,900.79
6. Step 6: Final answer
   x = 1,368.80