Finding the Fourth Proportional to 1,408.78, 1,943.76 and 1,058.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,408.78 : 1,943.76 = 1,058.86 : x
2. Step 2: Convert to fraction form
   1,408.78/1,943.76 = 1,058.86/x
3. Step 3: Cross multiply
   1,408.78x = 1,943.76 × 1,058.86
4. Step 4: Simplify right side
   1,408.78x = 2,058,169.71
5. Step 5: Solve for x
   x = 2,058,169.71/1,408.78
6. Step 6: Final answer
   x = 1,460.96