Finding the Fourth Proportional to 1,445.52, 1,994.76 and 856.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,445.52 : 1,994.76 = 856.32 : x
2. Step 2: Convert to fraction form
   1,445.52/1,994.76 = 856.32/x
3. Step 3: Cross multiply
   1,445.52x = 1,994.76 × 856.32
4. Step 4: Simplify right side
   1,445.52x = 1,708,152.88
5. Step 5: Solve for x
   x = 1,708,152.88/1,445.52
6. Step 6: Final answer
   x = 1,181.69