Finding the Fourth Proportional to 1,090,675.72, 1,636,101.06 and 380,688.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090,675.72 : 1,636,101.06 = 380,688.04 : x
2. Step 2: Convert to fraction form
   1,090,675.72/1,636,101.06 = 380,688.04/x
3. Step 3: Cross multiply
   1,090,675.72x = 1,636,101.06 × 380,688.04
4. Step 4: Simplify right side
   1,090,675.72x = 622,844,105,773.32
5. Step 5: Solve for x
   x = 622,844,105,773.32/1,090,675.72
6. Step 6: Final answer
   x = 571,062.59