Finding the Fourth Proportional to 1,404.34, 1,937.91 and 774.87

Step by Step Solution

1. Step 1: Write the proportion equation
   1,404.34 : 1,937.91 = 774.87 : x
2. Step 2: Convert to fraction form
   1,404.34/1,937.91 = 774.87/x
3. Step 3: Cross multiply
   1,404.34x = 1,937.91 × 774.87
4. Step 4: Simplify right side
   1,404.34x = 1,501,633.17
5. Step 5: Solve for x
   x = 1,501,633.17/1,404.34
6. Step 6: Final answer
   x = 1,069.28