Finding the Fourth Proportional to 1,085.00, 1,627.02 and 646.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.00 : 1,627.02 = 646.46 : x
2. Step 2: Convert to fraction form
   1,085.00/1,627.02 = 646.46/x
3. Step 3: Cross multiply
   1,085.00x = 1,627.02 × 646.46
4. Step 4: Simplify right side
   1,085.00x = 1,051,804.59
5. Step 5: Solve for x
   x = 1,051,804.59/1,085.00
6. Step 6: Final answer
   x = 969.40