Finding the Fourth Proportional to 2,767.12, 4,150.59 and 917.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,767.12 : 4,150.59 = 917.47 : x
2. Step 2: Convert to fraction form
   2,767.12/4,150.59 = 917.47/x
3. Step 3: Cross multiply
   2,767.12x = 4,150.59 × 917.47
4. Step 4: Simplify right side
   2,767.12x = 3,808,041.81
5. Step 5: Solve for x
   x = 3,808,041.81/2,767.12
6. Step 6: Final answer
   x = 1,376.18