Finding the Fourth Proportional to 1,377.24, 1,902.24 and 1,003.62

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.24 : 1,902.24 = 1,003.62 : x
2. Step 2: Convert to fraction form
   1,377.24/1,902.24 = 1,003.62/x
3. Step 3: Cross multiply
   1,377.24x = 1,902.24 × 1,003.62
4. Step 4: Simplify right side
   1,377.24x = 1,909,126.11
5. Step 5: Solve for x
   x = 1,909,126.11/1,377.24
6. Step 6: Final answer
   x = 1,386.20