Finding the Fourth Proportional to 1,175,061.96, 1,621,595.78 and 638,517.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175,061.96 : 1,621,595.78 = 638,517.96 : x
2. Step 2: Convert to fraction form
   1,175,061.96/1,621,595.78 = 638,517.96/x
3. Step 3: Cross multiply
   1,175,061.96x = 1,621,595.78 × 638,517.96
4. Step 4: Simplify right side
   1,175,061.96x = 1,035,418,029,390.21
5. Step 5: Solve for x
   x = 1,035,418,029,390.21/1,175,061.96
6. Step 6: Final answer
   x = 881,160.37