Finding the Fourth Proportional to 1,404.35, 1,937.54 and 806.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.35 : 1,937.54 = 806.77 : x
2. Step 2: Convert to fraction form
   1,404.35/1,937.54 = 806.77/x
3. Step 3: Cross multiply
   1,404.35x = 1,937.54 × 806.77
4. Step 4: Simplify right side
   1,404.35x = 1,563,146.32
5. Step 5: Solve for x
   x = 1,563,146.32/1,404.35
6. Step 6: Final answer
   x = 1,113.08