Finding the Fourth Proportional to 1,085.34, 1,628.46 and 598.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.34 : 1,628.46 = 598.35 : x
2. Step 2: Convert to fraction form
   1,085.34/1,628.46 = 598.35/x
3. Step 3: Cross multiply
   1,085.34x = 1,628.46 × 598.35
4. Step 4: Simplify right side
   1,085.34x = 974,389.04
5. Step 5: Solve for x
   x = 974,389.04/1,085.34
6. Step 6: Final answer
   x = 897.77