Finding the Fourth Proportional to 1,773.79, 2,448.12 and 1,278.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,773.79 : 2,448.12 = 1,278.07 : x
2. Step 2: Convert to fraction form
   1,773.79/2,448.12 = 1,278.07/x
3. Step 3: Cross multiply
   1,773.79x = 2,448.12 × 1,278.07
4. Step 4: Simplify right side
   1,773.79x = 3,128,868.73
5. Step 5: Solve for x
   x = 3,128,868.73/1,773.79
6. Step 6: Final answer
   x = 1,763.95