Finding the Fourth Proportional to 2,085.37, 3,126.52 and 988.45

Step by Step Solution

1. Step 1: Write the proportion equation
   2,085.37 : 3,126.52 = 988.45 : x
2. Step 2: Convert to fraction form
   2,085.37/3,126.52 = 988.45/x
3. Step 3: Cross multiply
   2,085.37x = 3,126.52 × 988.45
4. Step 4: Simplify right side
   2,085.37x = 3,090,408.69
5. Step 5: Solve for x
   x = 3,090,408.69/2,085.37
6. Step 6: Final answer
   x = 1,481.95