Finding the Fourth Proportional to 1,333,345.36, 2,000,485.72 and 386,772.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333,345.36 : 2,000,485.72 = 386,772.88 : x
2. Step 2: Convert to fraction form
   1,333,345.36/2,000,485.72 = 386,772.88/x
3. Step 3: Cross multiply
   1,333,345.36x = 2,000,485.72 × 386,772.88
4. Step 4: Simplify right side
   1,333,345.36x = 773,733,623,323.27
5. Step 5: Solve for x
   x = 773,733,623,323.27/1,333,345.36
6. Step 6: Final answer
   x = 580,294.98