Finding the Fourth Proportional to 1,777.48, 2,667.49 and 790.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.48 : 2,667.49 = 790.56 : x
2. Step 2: Convert to fraction form
   1,777.48/2,667.49 = 790.56/x
3. Step 3: Cross multiply
   1,777.48x = 2,667.49 × 790.56
4. Step 4: Simplify right side
   1,777.48x = 2,108,810.89
5. Step 5: Solve for x
   x = 2,108,810.89/1,777.48
6. Step 6: Final answer
   x = 1,186.40