Finding the Fourth Proportional to 1,182,476.98, 1,631,817.83 and 638,612.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,182,476.98 : 1,631,817.83 = 638,612.88 : x
2. Step 2: Convert to fraction form
   1,182,476.98/1,631,817.83 = 638,612.88/x
3. Step 3: Cross multiply
   1,182,476.98x = 1,631,817.83 × 638,612.88
4. Step 4: Simplify right side
   1,182,476.98x = 1,042,099,893,970.94
5. Step 5: Solve for x
   x = 1,042,099,893,970.94/1,182,476.98
6. Step 6: Final answer
   x = 881,285.56