Finding the Fourth Proportional to 997,100.79, 1,376,635.42 and 813,777.28

Step by Step Solution

1. Step 1: Write the proportion equation
   997,100.79 : 1,376,635.42 = 813,777.28 : x
2. Step 2: Convert to fraction form
   997,100.79/1,376,635.42 = 813,777.28/x
3. Step 3: Cross multiply
   997,100.79x = 1,376,635.42 × 813,777.28
4. Step 4: Simplify right side
   997,100.79x = 1,120,274,635,247.21
5. Step 5: Solve for x
   x = 1,120,274,635,247.21/997,100.79
6. Step 6: Final answer
   x = 1,123,531.99