Finding the Fourth Proportional to 2,910.87, 4,364.38 and 1,061.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,910.87 : 4,364.38 = 1,061.64 : x
2. Step 2: Convert to fraction form
   2,910.87/4,364.38 = 1,061.64/x
3. Step 3: Cross multiply
   2,910.87x = 4,364.38 × 1,061.64
4. Step 4: Simplify right side
   2,910.87x = 4,633,400.38
5. Step 5: Solve for x
   x = 4,633,400.38/2,910.87
6. Step 6: Final answer
   x = 1,591.76