Finding the Fourth Proportional to 1,407.18, 1,941.57 and 909.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,407.18 : 1,941.57 = 909.03 : x
2. Step 2: Convert to fraction form
   1,407.18/1,941.57 = 909.03/x
3. Step 3: Cross multiply
   1,407.18x = 1,941.57 × 909.03
4. Step 4: Simplify right side
   1,407.18x = 1,764,945.38
5. Step 5: Solve for x
   x = 1,764,945.38/1,407.18
6. Step 6: Final answer
   x = 1,254.24