Finding the Fourth Proportional to 2,106.90, 2,907.50 and 1,162.79

Step by Step Solution

1. Step 1: Write the proportion equation
   2,106.90 : 2,907.50 = 1,162.79 : x
2. Step 2: Convert to fraction form
   2,106.90/2,907.50 = 1,162.79/x
3. Step 3: Cross multiply
   2,106.90x = 2,907.50 × 1,162.79
4. Step 4: Simplify right side
   2,106.90x = 3,380,802.48
5. Step 5: Solve for x
   x = 3,380,802.48/2,106.90
6. Step 6: Final answer
   x = 1,604.63