Finding the Fourth Proportional to 1,334.78, 1,842.57 and 914.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,334.78 : 1,842.57 = 914.99 : x
2. Step 2: Convert to fraction form
   1,334.78/1,842.57 = 914.99/x
3. Step 3: Cross multiply
   1,334.78x = 1,842.57 × 914.99
4. Step 4: Simplify right side
   1,334.78x = 1,685,928.55
5. Step 5: Solve for x
   x = 1,685,928.55/1,334.78
6. Step 6: Final answer
   x = 1,263.08