Finding the Fourth Proportional to 1,361,142.88, 2,042,009.52 and 414,488.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,361,142.88 : 2,042,009.52 = 414,488.80 : x
2. Step 2: Convert to fraction form
   1,361,142.88/2,042,009.52 = 414,488.80/x
3. Step 3: Cross multiply
   1,361,142.88x = 2,042,009.52 × 414,488.80
4. Step 4: Simplify right side
   1,361,142.88x = 846,390,075,533.38
5. Step 5: Solve for x
   x = 846,390,075,533.38/1,361,142.88
6. Step 6: Final answer
   x = 621,823.09