Finding the Fourth Proportional to 1,402.03, 1,934.31 and 812.49

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.03 : 1,934.31 = 812.49 : x
2. Step 2: Convert to fraction form
   1,402.03/1,934.31 = 812.49/x
3. Step 3: Cross multiply
   1,402.03x = 1,934.31 × 812.49
4. Step 4: Simplify right side
   1,402.03x = 1,571,607.53
5. Step 5: Solve for x
   x = 1,571,607.53/1,402.03
6. Step 6: Final answer
   x = 1,120.95