Finding the Fourth Proportional to 1,267.69, 1,749.60 and 914.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267.69 : 1,749.60 = 914.78 : x
2. Step 2: Convert to fraction form
   1,267.69/1,749.60 = 914.78/x
3. Step 3: Cross multiply
   1,267.69x = 1,749.60 × 914.78
4. Step 4: Simplify right side
   1,267.69x = 1,600,494.51
5. Step 5: Solve for x
   x = 1,600,494.51/1,267.69
6. Step 6: Final answer
   x = 1,262.53