Finding the Fourth Proportional to 1,899.59, 2,622.99 and 1,309.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,899.59 : 2,622.99 = 1,309.10 : x
2. Step 2: Convert to fraction form
   1,899.59/2,622.99 = 1,309.10/x
3. Step 3: Cross multiply
   1,899.59x = 2,622.99 × 1,309.10
4. Step 4: Simplify right side
   1,899.59x = 3,433,743.09
5. Step 5: Solve for x
   x = 3,433,743.09/1,899.59
6. Step 6: Final answer
   x = 1,807.63