Finding the Fourth Proportional to 1,336.50, 1,842.79 and 917.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,336.50 : 1,842.79 = 917.06 : x
2. Step 2: Convert to fraction form
   1,336.50/1,842.79 = 917.06/x
3. Step 3: Cross multiply
   1,336.50x = 1,842.79 × 917.06
4. Step 4: Simplify right side
   1,336.50x = 1,689,949.00
5. Step 5: Solve for x
   x = 1,689,949.00/1,336.50
6. Step 6: Final answer
   x = 1,264.46