Finding the Fourth Proportional to 1,404.32, 1,937.93 and 774.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.32 : 1,937.93 = 774.81 : x
2. Step 2: Convert to fraction form
   1,404.32/1,937.93 = 774.81/x
3. Step 3: Cross multiply
   1,404.32x = 1,937.93 × 774.81
4. Step 4: Simplify right side
   1,404.32x = 1,501,523.67
5. Step 5: Solve for x
   x = 1,501,523.67/1,404.32
6. Step 6: Final answer
   x = 1,069.22