Finding the Fourth Proportional to 1,372.16, 2,055.30 and 1,096.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,372.16 : 2,055.30 = 1,096.76 : x
2. Step 2: Convert to fraction form
   1,372.16/2,055.30 = 1,096.76/x
3. Step 3: Cross multiply
   1,372.16x = 2,055.30 × 1,096.76
4. Step 4: Simplify right side
   1,372.16x = 2,254,170.83
5. Step 5: Solve for x
   x = 2,254,170.83/1,372.16
6. Step 6: Final answer
   x = 1,642.79