Finding the Fourth Proportional to 1,774.31, 2,448.56 and 988.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,774.31 : 2,448.56 = 988.37 : x
2. Step 2: Convert to fraction form
   1,774.31/2,448.56 = 988.37/x
3. Step 3: Cross multiply
   1,774.31x = 2,448.56 × 988.37
4. Step 4: Simplify right side
   1,774.31x = 2,420,073.48
5. Step 5: Solve for x
   x = 2,420,073.48/1,774.31
6. Step 6: Final answer
   x = 1,363.95