Finding the Fourth Proportional to 2,478.96, 3,719.41 and 1,091.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,478.96 : 3,719.41 = 1,091.32 : x
2. Step 2: Convert to fraction form
   2,478.96/3,719.41 = 1,091.32/x
3. Step 3: Cross multiply
   2,478.96x = 3,719.41 × 1,091.32
4. Step 4: Simplify right side
   2,478.96x = 4,059,066.77
5. Step 5: Solve for x
   x = 4,059,066.77/2,478.96
6. Step 6: Final answer
   x = 1,637.41