Finding the Fourth Proportional to 1,308.15, 1,803.06 and 914.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,308.15 : 1,803.06 = 914.49 : x
2. Step 2: Convert to fraction form
   1,308.15/1,803.06 = 914.49/x
3. Step 3: Cross multiply
   1,308.15x = 1,803.06 × 914.49
4. Step 4: Simplify right side
   1,308.15x = 1,648,880.34
5. Step 5: Solve for x
   x = 1,648,880.34/1,308.15
6. Step 6: Final answer
   x = 1,260.47