Finding the Fourth Proportional to 1,777.96, 2,667.80 and 738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.96 : 2,667.80 = 738.72 : x
2. Step 2: Convert to fraction form
   1,777.96/2,667.80 = 738.72/x
3. Step 3: Cross multiply
   1,777.96x = 2,667.80 × 738.72
4. Step 4: Simplify right side
   1,777.96x = 1,970,757.22
5. Step 5: Solve for x
   x = 1,970,757.22/1,777.96
6. Step 6: Final answer
   x = 1,108.44