Finding the Fourth Proportional to 1,085.59, 1,627.68 and 598.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,085.59 : 1,627.68 = 598.98 : x
2. Step 2: Convert to fraction form
   1,085.59/1,627.68 = 598.98/x
3. Step 3: Cross multiply
   1,085.59x = 1,627.68 × 598.98
4. Step 4: Simplify right side
   1,085.59x = 974,947.77
5. Step 5: Solve for x
   x = 974,947.77/1,085.59
6. Step 6: Final answer
   x = 898.08