Finding the Fourth Proportional to 1,080.94, 1,620.05 and 587.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,080.94 : 1,620.05 = 587.34 : x
2. Step 2: Convert to fraction form
   1,080.94/1,620.05 = 587.34/x
3. Step 3: Cross multiply
   1,080.94x = 1,620.05 × 587.34
4. Step 4: Simplify right side
   1,080.94x = 951,520.17
5. Step 5: Solve for x
   x = 951,520.17/1,080.94
6. Step 6: Final answer
   x = 880.27