Finding the Fourth Proportional to 1,146.40, 1,718.88 and 598.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.40 : 1,718.88 = 598.76 : x
2. Step 2: Convert to fraction form
   1,146.40/1,718.88 = 598.76/x
3. Step 3: Cross multiply
   1,146.40x = 1,718.88 × 598.76
4. Step 4: Simplify right side
   1,146.40x = 1,029,196.59
5. Step 5: Solve for x
   x = 1,029,196.59/1,146.40
6. Step 6: Final answer
   x = 897.76