Finding the Fourth Proportional to 1,233,870.77, 1,850,118.47 and 380,700.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,233,870.77 : 1,850,118.47 = 380,700.20 : x
2. Step 2: Convert to fraction form
   1,233,870.77/1,850,118.47 = 380,700.20/x
3. Step 3: Cross multiply
   1,233,870.77x = 1,850,118.47 × 380,700.20
4. Step 4: Simplify right side
   1,233,870.77x = 704,340,475,702.12
5. Step 5: Solve for x
   x = 704,340,475,702.12/1,233,870.77
6. Step 6: Final answer
   x = 570,838.12