Finding the Fourth Proportional to 2,071.76, 3,106.72 and 1,097.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,071.76 : 3,106.72 = 1,097.62 : x
2. Step 2: Convert to fraction form
   2,071.76/3,106.72 = 1,097.62/x
3. Step 3: Cross multiply
   2,071.76x = 3,106.72 × 1,097.62
4. Step 4: Simplify right side
   2,071.76x = 3,409,998.01
5. Step 5: Solve for x
   x = 3,409,998.01/2,071.76
6. Step 6: Final answer
   x = 1,645.94