Finding the Fourth Proportional to 1,910.48, 2,636.56 and 1,071.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,910.48 : 2,636.56 = 1,071.36 : x
2. Step 2: Convert to fraction form
   1,910.48/2,636.56 = 1,071.36/x
3. Step 3: Cross multiply
   1,910.48x = 2,636.56 × 1,071.36
4. Step 4: Simplify right side
   1,910.48x = 2,824,704.92
5. Step 5: Solve for x
   x = 2,824,704.92/1,910.48
6. Step 6: Final answer
   x = 1,478.53