Finding the Fourth Proportional to 1,777.89, 2,453.73 and 1,079.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.89 : 2,453.73 = 1,079.28 : x
2. Step 2: Convert to fraction form
   1,777.89/2,453.73 = 1,079.28/x
3. Step 3: Cross multiply
   1,777.89x = 2,453.73 × 1,079.28
4. Step 4: Simplify right side
   1,777.89x = 2,648,261.71
5. Step 5: Solve for x
   x = 2,648,261.71/1,777.89
6. Step 6: Final answer
   x = 1,489.55