Finding the Fourth Proportional to 1,058,726.78, 1,587,692.72 and 384,641.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,058,726.78 : 1,587,692.72 = 384,641.54 : x
2. Step 2: Convert to fraction form
   1,058,726.78/1,587,692.72 = 384,641.54/x
3. Step 3: Cross multiply
   1,058,726.78x = 1,587,692.72 × 384,641.54
4. Step 4: Simplify right side
   1,058,726.78x = 610,692,572,867.59
5. Step 5: Solve for x
   x = 610,692,572,867.59/1,058,726.78
6. Step 6: Final answer
   x = 576,817.91