Finding the Fourth Proportional to 2,557.22, 3,827.58 and 1,322.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,557.22 : 3,827.58 = 1,322.93 : x
2. Step 2: Convert to fraction form
   2,557.22/3,827.58 = 1,322.93/x
3. Step 3: Cross multiply
   2,557.22x = 3,827.58 × 1,322.93
4. Step 4: Simplify right side
   2,557.22x = 5,063,620.41
5. Step 5: Solve for x
   x = 5,063,620.41/2,557.22
6. Step 6: Final answer
   x = 1,980.13