Finding the Fourth Proportional to 1,948.50, 2,688.93 and 1,286.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,948.50 : 2,688.93 = 1,286.46 : x
2. Step 2: Convert to fraction form
   1,948.50/2,688.93 = 1,286.46/x
3. Step 3: Cross multiply
   1,948.50x = 2,688.93 × 1,286.46
4. Step 4: Simplify right side
   1,948.50x = 3,459,200.89
5. Step 5: Solve for x
   x = 3,459,200.89/1,948.50
6. Step 6: Final answer
   x = 1,775.31