Finding the Fourth Proportional to 1,403.02, 1,936.10 and 805.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403.02 : 1,936.10 = 805.10 : x
2. Step 2: Convert to fraction form
   1,403.02/1,936.10 = 805.10/x
3. Step 3: Cross multiply
   1,403.02x = 1,936.10 × 805.10
4. Step 4: Simplify right side
   1,403.02x = 1,558,747.42
5. Step 5: Solve for x
   x = 1,558,747.42/1,403.02
6. Step 6: Final answer
   x = 1,111.00