Finding the Fourth Proportional to 2,477.96, 3,420.99 and 1,722.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,477.96 : 3,420.99 = 1,722.86 : x
2. Step 2: Convert to fraction form
   2,477.96/3,420.99 = 1,722.86/x
3. Step 3: Cross multiply
   2,477.96x = 3,420.99 × 1,722.86
4. Step 4: Simplify right side
   2,477.96x = 5,893,886.83
5. Step 5: Solve for x
   x = 5,893,886.83/2,477.96
6. Step 6: Final answer
   x = 2,378.52