Finding the Fourth Proportional to 1,365.81, 2,045.24 and 902.19

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365.81 : 2,045.24 = 902.19 : x
2. Step 2: Convert to fraction form
   1,365.81/2,045.24 = 902.19/x
3. Step 3: Cross multiply
   1,365.81x = 2,045.24 × 902.19
4. Step 4: Simplify right side
   1,365.81x = 1,845,190.56
5. Step 5: Solve for x
   x = 1,845,190.56/1,365.81
6. Step 6: Final answer
   x = 1,350.99