Finding the Fourth Proportional to 869,910.77, 1,200,474.37 and 482,784.61

Step by Step Solution

1. Step 1: Write the proportion equation
   869,910.77 : 1,200,474.37 = 482,784.61 : x
2. Step 2: Convert to fraction form
   869,910.77/1,200,474.37 = 482,784.61/x
3. Step 3: Cross multiply
   869,910.77x = 1,200,474.37 × 482,784.61
4. Step 4: Simplify right side
   869,910.77x = 579,570,547,434.31
5. Step 5: Solve for x
   x = 579,570,547,434.31/869,910.77
6. Step 6: Final answer
   x = 666,241.37