Finding the Fourth Proportional to 1,353.42, 1,868.34 and 910.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.42 : 1,868.34 = 910.50 : x
2. Step 2: Convert to fraction form
   1,353.42/1,868.34 = 910.50/x
3. Step 3: Cross multiply
   1,353.42x = 1,868.34 × 910.50
4. Step 4: Simplify right side
   1,353.42x = 1,701,123.57
5. Step 5: Solve for x
   x = 1,701,123.57/1,353.42
6. Step 6: Final answer
   x = 1,256.91