Finding the Fourth Proportional to 3,100.86, 4,640.57 and 1,914.42

Step by Step Solution

1. Step 1: Write the proportion equation
   3,100.86 : 4,640.57 = 1,914.42 : x
2. Step 2: Convert to fraction form
   3,100.86/4,640.57 = 1,914.42/x
3. Step 3: Cross multiply
   3,100.86x = 4,640.57 × 1,914.42
4. Step 4: Simplify right side
   3,100.86x = 8,883,980.22
5. Step 5: Solve for x
   x = 8,883,980.22/3,100.86
6. Step 6: Final answer
   x = 2,865.00