Finding the Fourth Proportional to 1,398.37, 1,927.37 and 955.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.37 : 1,927.37 = 955.50 : x
2. Step 2: Convert to fraction form
   1,398.37/1,927.37 = 955.50/x
3. Step 3: Cross multiply
   1,398.37x = 1,927.37 × 955.50
4. Step 4: Simplify right side
   1,398.37x = 1,841,592.44
5. Step 5: Solve for x
   x = 1,841,592.44/1,398.37
6. Step 6: Final answer
   x = 1,316.96