Finding the Fourth Proportional to 2,106.53, 3,160.52 and 936.63

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.53 : 3,160.52 = 936.63 : x
2. Step 2: Convert to fraction form
   2,106.53/3,160.52 = 936.63/x
3. Step 3: Cross multiply
   2,106.53x = 3,160.52 × 936.63
4. Step 4: Simplify right side
   2,106.53x = 2,960,243.34
5. Step 5: Solve for x
   x = 2,960,243.34/2,106.53
6. Step 6: Final answer
   x = 1,405.27