Finding the Fourth Proportional to 2,091.42, 3,137.94 and 1,224.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,091.42 : 3,137.94 = 1,224.72 : x
2. Step 2: Convert to fraction form
   2,091.42/3,137.94 = 1,224.72/x
3. Step 3: Cross multiply
   2,091.42x = 3,137.94 × 1,224.72
4. Step 4: Simplify right side
   2,091.42x = 3,843,097.88
5. Step 5: Solve for x
   x = 3,843,097.88/2,091.42
6. Step 6: Final answer
   x = 1,837.55