Finding the Fourth Proportional to 2,783.67, 4,175.60 and 1,222.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,783.67 : 4,175.60 = 1,222.91 : x
2. Step 2: Convert to fraction form
   2,783.67/4,175.60 = 1,222.91/x
3. Step 3: Cross multiply
   2,783.67x = 4,175.60 × 1,222.91
4. Step 4: Simplify right side
   2,783.67x = 5,106,356.00
5. Step 5: Solve for x
   x = 5,106,356.00/2,783.67
6. Step 6: Final answer
   x = 1,834.40