Finding the Fourth Proportional to 2,430.62, 3,646.29 and 891.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,430.62 : 3,646.29 = 891.50 : x
2. Step 2: Convert to fraction form
   2,430.62/3,646.29 = 891.50/x
3. Step 3: Cross multiply
   2,430.62x = 3,646.29 × 891.50
4. Step 4: Simplify right side
   2,430.62x = 3,250,667.54
5. Step 5: Solve for x
   x = 3,250,667.54/2,430.62
6. Step 6: Final answer
   x = 1,337.38