Finding the Fourth Proportional to 1,404.19, 1,937.77 and 774.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.19 : 1,937.77 = 774.76 : x
2. Step 2: Convert to fraction form
   1,404.19/1,937.77 = 774.76/x
3. Step 3: Cross multiply
   1,404.19x = 1,937.77 × 774.76
4. Step 4: Simplify right side
   1,404.19x = 1,501,298.93
5. Step 5: Solve for x
   x = 1,501,298.93/1,404.19
6. Step 6: Final answer
   x = 1,069.16