Finding the Fourth Proportional to 2,917.92, 4,374.72 and 1,620.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,917.92 : 4,374.72 = 1,620.48 : x
2. Step 2: Convert to fraction form
   2,917.92/4,374.72 = 1,620.48/x
3. Step 3: Cross multiply
   2,917.92x = 4,374.72 × 1,620.48
4. Step 4: Simplify right side
   2,917.92x = 7,089,146.27
5. Step 5: Solve for x
   x = 7,089,146.27/2,917.92
6. Step 6: Final answer
   x = 2,429.52