Finding the Fourth Proportional to 1,090,118.82, 1,635,185.52 and 380,144.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090,118.82 : 1,635,185.52 = 380,144.10 : x
2. Step 2: Convert to fraction form
   1,090,118.82/1,635,185.52 = 380,144.10/x
3. Step 3: Cross multiply
   1,090,118.82x = 1,635,185.52 × 380,144.10
4. Step 4: Simplify right side
   1,090,118.82x = 621,606,127,833.43
5. Step 5: Solve for x
   x = 621,606,127,833.43/1,090,118.82
6. Step 6: Final answer
   x = 570,218.69