Finding the Fourth Proportional to 1,856.85, 2,786.98 and 1,164.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,856.85 : 2,786.98 = 1,164.76 : x
2. Step 2: Convert to fraction form
   1,856.85/2,786.98 = 1,164.76/x
3. Step 3: Cross multiply
   1,856.85x = 2,786.98 × 1,164.76
4. Step 4: Simplify right side
   1,856.85x = 3,246,162.82
5. Step 5: Solve for x
   x = 3,246,162.82/1,856.85
6. Step 6: Final answer
   x = 1,748.21