Finding the Fourth Proportional to 1,402.49, 1,935.41 and 813.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.49 : 1,935.41 = 813.08 : x
2. Step 2: Convert to fraction form
   1,402.49/1,935.41 = 813.08/x
3. Step 3: Cross multiply
   1,402.49x = 1,935.41 × 813.08
4. Step 4: Simplify right side
   1,402.49x = 1,573,629.42
5. Step 5: Solve for x
   x = 1,573,629.42/1,402.49
6. Step 6: Final answer
   x = 1,122.03