Finding the Fourth Proportional to 2,039.34, 2,811.18 and 1,680.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,039.34 : 2,811.18 = 1,680.93 : x
2. Step 2: Convert to fraction form
   2,039.34/2,811.18 = 1,680.93/x
3. Step 3: Cross multiply
   2,039.34x = 2,811.18 × 1,680.93
4. Step 4: Simplify right side
   2,039.34x = 4,725,396.80
5. Step 5: Solve for x
   x = 4,725,396.80/2,039.34
6. Step 6: Final answer
   x = 2,317.12