Finding the Fourth Proportional to 1,094,109.93, 1,640,042.24 and 420,009.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,094,109.93 : 1,640,042.24 = 420,009.71 : x
2. Step 2: Convert to fraction form
   1,094,109.93/1,640,042.24 = 420,009.71/x
3. Step 3: Cross multiply
   1,094,109.93x = 1,640,042.24 × 420,009.71
4. Step 4: Simplify right side
   1,094,109.93x = 688,833,655,309.89
5. Step 5: Solve for x
   x = 688,833,655,309.89/1,094,109.93
6. Step 6: Final answer
   x = 629,583.59