Finding the Fourth Proportional to 1,055,041.61, 1,582,564.23 and 256,323.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055,041.61 : 1,582,564.23 = 256,323.69 : x
2. Step 2: Convert to fraction form
   1,055,041.61/1,582,564.23 = 256,323.69/x
3. Step 3: Cross multiply
   1,055,041.61x = 1,582,564.23 × 256,323.69
4. Step 4: Simplify right side
   1,055,041.61x = 405,648,703,095.61
5. Step 5: Solve for x
   x = 405,648,703,095.61/1,055,041.61
6. Step 6: Final answer
   x = 384,485.98