Finding the Fourth Proportional to 1,985.27, 2,978.31 and 598.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.27 : 2,978.31 = 598.55 : x
2. Step 2: Convert to fraction form
   1,985.27/2,978.31 = 598.55/x
3. Step 3: Cross multiply
   1,985.27x = 2,978.31 × 598.55
4. Step 4: Simplify right side
   1,985.27x = 1,782,652.56
5. Step 5: Solve for x
   x = 1,782,652.56/1,985.27
6. Step 6: Final answer
   x = 897.94