Finding the Fourth Proportional to 2,240.96, 3,091.80 and 1,356.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,240.96 : 3,091.80 = 1,356.72 : x
2. Step 2: Convert to fraction form
   2,240.96/3,091.80 = 1,356.72/x
3. Step 3: Cross multiply
   2,240.96x = 3,091.80 × 1,356.72
4. Step 4: Simplify right side
   2,240.96x = 4,194,706.90
5. Step 5: Solve for x
   x = 4,194,706.90/2,240.96
6. Step 6: Final answer
   x = 1,871.83