Finding the Fourth Proportional to 1,090,696.72, 1,636,132.56 and 380,709.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,090,696.72 : 1,636,132.56 = 380,709.04 : x
2. Step 2: Convert to fraction form
   1,090,696.72/1,636,132.56 = 380,709.04/x
3. Step 3: Cross multiply
   1,090,696.72x = 1,636,132.56 × 380,709.04
4. Step 4: Simplify right side
   1,090,696.72x = 622,890,456,230.34
5. Step 5: Solve for x
   x = 622,890,456,230.34/1,090,696.72
6. Step 6: Final answer
   x = 571,094.10