Finding the Fourth Proportional to 1,777.33, 2,665.32 and 851.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.33 : 2,665.32 = 851.91 : x
2. Step 2: Convert to fraction form
   1,777.33/2,665.32 = 851.91/x
3. Step 3: Cross multiply
   1,777.33x = 2,665.32 × 851.91
4. Step 4: Simplify right side
   1,777.33x = 2,270,612.76
5. Step 5: Solve for x
   x = 2,270,612.76/1,777.33
6. Step 6: Final answer
   x = 1,277.54