Finding the Fourth Proportional to 3,707.90, 5,562.86 and 1,856.78

Step by Step Solution

1. Step 1: Write the proportion equation
   3,707.90 : 5,562.86 = 1,856.78 : x
2. Step 2: Convert to fraction form
   3,707.90/5,562.86 = 1,856.78/x
3. Step 3: Cross multiply
   3,707.90x = 5,562.86 × 1,856.78
4. Step 4: Simplify right side
   3,707.90x = 10,329,007.19
5. Step 5: Solve for x
   x = 10,329,007.19/3,707.90
6. Step 6: Final answer
   x = 2,785.68