Finding the Fourth Proportional to 1,180.00, 1,628.42 and 648.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,180.00 : 1,628.42 = 648.91 : x
2. Step 2: Convert to fraction form
   1,180.00/1,628.42 = 648.91/x
3. Step 3: Cross multiply
   1,180.00x = 1,628.42 × 648.91
4. Step 4: Simplify right side
   1,180.00x = 1,056,694.76
5. Step 5: Solve for x
   x = 1,056,694.76/1,180.00
6. Step 6: Final answer
   x = 895.50