Finding the Fourth Proportional to 1,811.37, 2,499.70 and 1,065.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.37 : 2,499.70 = 1,065.36 : x
2. Step 2: Convert to fraction form
   1,811.37/2,499.70 = 1,065.36/x
3. Step 3: Cross multiply
   1,811.37x = 2,499.70 × 1,065.36
4. Step 4: Simplify right side
   1,811.37x = 2,663,080.39
5. Step 5: Solve for x
   x = 2,663,080.39/1,811.37
6. Step 6: Final answer
   x = 1,470.20