Finding the Fourth Proportional to 2,238.56, 3,356.16 and 776.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,238.56 : 3,356.16 = 776.96 : x
2. Step 2: Convert to fraction form
   2,238.56/3,356.16 = 776.96/x
3. Step 3: Cross multiply
   2,238.56x = 3,356.16 × 776.96
4. Step 4: Simplify right side
   2,238.56x = 2,607,602.07
5. Step 5: Solve for x
   x = 2,607,602.07/2,238.56
6. Step 6: Final answer
   x = 1,164.86