Finding the Fourth Proportional to 1,953.72, 2,929.53 and 856.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,953.72 : 2,929.53 = 856.82 : x
2. Step 2: Convert to fraction form
   1,953.72/2,929.53 = 856.82/x
3. Step 3: Cross multiply
   1,953.72x = 2,929.53 × 856.82
4. Step 4: Simplify right side
   1,953.72x = 2,510,065.25
5. Step 5: Solve for x
   x = 2,510,065.25/1,953.72
6. Step 6: Final answer
   x = 1,284.76