Finding the Fourth Proportional to 1,811.61, 2,500.05 and 1,065.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.61 : 2,500.05 = 1,065.59 : x
2. Step 2: Convert to fraction form
   1,811.61/2,500.05 = 1,065.59/x
3. Step 3: Cross multiply
   1,811.61x = 2,500.05 × 1,065.59
4. Step 4: Simplify right side
   1,811.61x = 2,664,028.28
5. Step 5: Solve for x
   x = 2,664,028.28/1,811.61
6. Step 6: Final answer
   x = 1,470.53