Finding the Fourth Proportional to 1,627.98, 2,246.56 and 919.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,627.98 : 2,246.56 = 919.85 : x
2. Step 2: Convert to fraction form
   1,627.98/2,246.56 = 919.85/x
3. Step 3: Cross multiply
   1,627.98x = 2,246.56 × 919.85
4. Step 4: Simplify right side
   1,627.98x = 2,066,498.22
5. Step 5: Solve for x
   x = 2,066,498.22/1,627.98
6. Step 6: Final answer
   x = 1,269.36