Finding the Fourth Proportional to 2,242.56, 3,366.72 and 1,902.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,242.56 : 3,366.72 = 1,902.72 : x
2. Step 2: Convert to fraction form
   2,242.56/3,366.72 = 1,902.72/x
3. Step 3: Cross multiply
   2,242.56x = 3,366.72 × 1,902.72
4. Step 4: Simplify right side
   2,242.56x = 6,405,925.48
5. Step 5: Solve for x
   x = 6,405,925.48/2,242.56
6. Step 6: Final answer
   x = 2,856.52