Finding the Fourth Proportional to 1,345.71, 1,856.48 and 953.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,345.71 : 1,856.48 = 953.27 : x
2. Step 2: Convert to fraction form
   1,345.71/1,856.48 = 953.27/x
3. Step 3: Cross multiply
   1,345.71x = 1,856.48 × 953.27
4. Step 4: Simplify right side
   1,345.71x = 1,769,712.64
5. Step 5: Solve for x
   x = 1,769,712.64/1,345.71
6. Step 6: Final answer
   x = 1,315.08