Finding the Fourth Proportional to 869,610, 1,199,454.72 and 840,348

Step by Step Solution

1. Step 1: Write the proportion equation
   869,610 : 1,199,454.72 = 840,348 : x
2. Step 2: Convert to fraction form
   869,610/1,199,454.72 = 840,348/x
3. Step 3: Cross multiply
   869,610x = 1,199,454.72 × 840,348
4. Step 4: Simplify right side
   869,610x = 1,007,959,375,042.56
5. Step 5: Solve for x
   x = 1,007,959,375,042.56/869,610
6. Step 6: Final answer
   x = 1,159,093.59