Finding the Fourth Proportional to 1,108,109.73, 1,662,300.69 and 378,753.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,108,109.73 : 1,662,300.69 = 378,753.60 : x
2. Step 2: Convert to fraction form
   1,108,109.73/1,662,300.69 = 378,753.60/x
3. Step 3: Cross multiply
   1,108,109.73x = 1,662,300.69 × 378,753.60
4. Step 4: Simplify right side
   1,108,109.73x = 629,602,370,619.98
5. Step 5: Solve for x
   x = 629,602,370,619.98/1,108,109.73
6. Step 6: Final answer
   x = 568,176.92