Finding the Fourth Proportional to 1,805.55, 2,491.93 and 1,310.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,805.55 : 2,491.93 = 1,310.43 : x
2. Step 2: Convert to fraction form
   1,805.55/2,491.93 = 1,310.43/x
3. Step 3: Cross multiply
   1,805.55x = 2,491.93 × 1,310.43
4. Step 4: Simplify right side
   1,805.55x = 3,265,499.83
5. Step 5: Solve for x
   x = 3,265,499.83/1,805.55
6. Step 6: Final answer
   x = 1,808.59