Finding the Fourth Proportional to 1,906.91, 2,645.00 and 1,856.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,906.91 : 2,645.00 = 1,856.33 : x
2. Step 2: Convert to fraction form
   1,906.91/2,645.00 = 1,856.33/x
3. Step 3: Cross multiply
   1,906.91x = 2,645.00 × 1,856.33
4. Step 4: Simplify right side
   1,906.91x = 4,909,970.34
5. Step 5: Solve for x
   x = 4,909,970.34/1,906.91
6. Step 6: Final answer
   x = 2,574.84