Finding the Fourth Proportional to 842,936.10, 1,264,404.15 and 837,687.30

Step by Step Solution

1. Step 1: Write the proportion equation
   842,936.10 : 1,264,404.15 = 837,687.30 : x
2. Step 2: Convert to fraction form
   842,936.10/1,264,404.15 = 837,687.30/x
3. Step 3: Cross multiply
   842,936.10x = 1,264,404.15 × 837,687.30
4. Step 4: Simplify right side
   842,936.10x = 1,059,175,298,522.30
5. Step 5: Solve for x
   x = 1,059,175,298,522.30/842,936.10
6. Step 6: Final answer
   x = 1,256,530.95