Finding the Fourth Proportional to 1,511.34, 2,085.94 and 986.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,511.34 : 2,085.94 = 986.46 : x
2. Step 2: Convert to fraction form
   1,511.34/2,085.94 = 986.46/x
3. Step 3: Cross multiply
   1,511.34x = 2,085.94 × 986.46
4. Step 4: Simplify right side
   1,511.34x = 2,057,693.91
5. Step 5: Solve for x
   x = 2,057,693.91/1,511.34
6. Step 6: Final answer
   x = 1,361.50