Finding the Fourth Proportional to 1,781.94, 2,459.90 and 1,309.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,781.94 : 2,459.90 = 1,309.84 : x
2. Step 2: Convert to fraction form
   1,781.94/2,459.90 = 1,309.84/x
3. Step 3: Cross multiply
   1,781.94x = 2,459.90 × 1,309.84
4. Step 4: Simplify right side
   1,781.94x = 3,222,062.72
5. Step 5: Solve for x
   x = 3,222,062.72/1,781.94
6. Step 6: Final answer
   x = 1,808.18