Finding the Fourth Proportional to 1,910.73, 2,636.90 and 1,071.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.73 : 2,636.90 = 1,071.52 : x
2. Step 2: Convert to fraction form
   1,910.73/2,636.90 = 1,071.52/x
3. Step 3: Cross multiply
   1,910.73x = 2,636.90 × 1,071.52
4. Step 4: Simplify right side
   1,910.73x = 2,825,491.09
5. Step 5: Solve for x
   x = 2,825,491.09/1,910.73
6. Step 6: Final answer
   x = 1,478.75