Finding the Fourth Proportional to 1,307.74, 1,802.89 and 1,009.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,307.74 : 1,802.89 = 1,009.46 : x
2. Step 2: Convert to fraction form
   1,307.74/1,802.89 = 1,009.46/x
3. Step 3: Cross multiply
   1,307.74x = 1,802.89 × 1,009.46
4. Step 4: Simplify right side
   1,307.74x = 1,819,945.34
5. Step 5: Solve for x
   x = 1,819,945.34/1,307.74
6. Step 6: Final answer
   x = 1,391.67