Finding the Fourth Proportional to 1,773.89, 2,661.38 and 908.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.89 : 2,661.38 = 908.81 : x
2. Step 2: Convert to fraction form
   1,773.89/2,661.38 = 908.81/x
3. Step 3: Cross multiply
   1,773.89x = 2,661.38 × 908.81
4. Step 4: Simplify right side
   1,773.89x = 2,418,688.76
5. Step 5: Solve for x
   x = 2,418,688.76/1,773.89
6. Step 6: Final answer
   x = 1,363.49