Finding the Fourth Proportional to 1,085.00, 1,626.58 and 354.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.00 : 1,626.58 = 354.17 : x
2. Step 2: Convert to fraction form
   1,085.00/1,626.58 = 354.17/x
3. Step 3: Cross multiply
   1,085.00x = 1,626.58 × 354.17
4. Step 4: Simplify right side
   1,085.00x = 576,090.35
5. Step 5: Solve for x
   x = 576,090.35/1,085.00
6. Step 6: Final answer
   x = 530.96