Finding the Fourth Proportional to 1,333.71, 1,839.65 and 810.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.71 : 1,839.65 = 810.05 : x
2. Step 2: Convert to fraction form
   1,333.71/1,839.65 = 810.05/x
3. Step 3: Cross multiply
   1,333.71x = 1,839.65 × 810.05
4. Step 4: Simplify right side
   1,333.71x = 1,490,195.23
5. Step 5: Solve for x
   x = 1,490,195.23/1,333.71
6. Step 6: Final answer
   x = 1,117.33