Finding the Fourth Proportional to 2,150.07, 3,225.33 and 917.61

Step by Step Solution

1. Step 1: Write the proportion equation
   2,150.07 : 3,225.33 = 917.61 : x
2. Step 2: Convert to fraction form
   2,150.07/3,225.33 = 917.61/x
3. Step 3: Cross multiply
   2,150.07x = 3,225.33 × 917.61
4. Step 4: Simplify right side
   2,150.07x = 2,959,595.06
5. Step 5: Solve for x
   x = 2,959,595.06/2,150.07
6. Step 6: Final answer
   x = 1,376.51