Finding the Fourth Proportional to 1,612.70, 2,224.59 and 913.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,612.70 : 2,224.59 = 913.94 : x
2. Step 2: Convert to fraction form
   1,612.70/2,224.59 = 913.94/x
3. Step 3: Cross multiply
   1,612.70x = 2,224.59 × 913.94
4. Step 4: Simplify right side
   1,612.70x = 2,033,141.78
5. Step 5: Solve for x
   x = 2,033,141.78/1,612.70
6. Step 6: Final answer
   x = 1,260.71