Finding the Fourth Proportional to 1,811.36, 2,499.71 and 1,065.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.36 : 2,499.71 = 1,065.34 : x
2. Step 2: Convert to fraction form
   1,811.36/2,499.71 = 1,065.34/x
3. Step 3: Cross multiply
   1,811.36x = 2,499.71 × 1,065.34
4. Step 4: Simplify right side
   1,811.36x = 2,663,023.23
5. Step 5: Solve for x
   x = 2,663,023.23/1,811.36
6. Step 6: Final answer
   x = 1,470.18