Finding the Fourth Proportional to 1,985.53, 2,978.79 and 598.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.53 : 2,978.79 = 598.83 : x
2. Step 2: Convert to fraction form
   1,985.53/2,978.79 = 598.83/x
3. Step 3: Cross multiply
   1,985.53x = 2,978.79 × 598.83
4. Step 4: Simplify right side
   1,985.53x = 1,783,785.82
5. Step 5: Solve for x
   x = 1,783,785.82/1,985.53
6. Step 6: Final answer
   x = 898.40