Finding the Fourth Proportional to 1,985.76, 2,740.20 and 1,146.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.76 : 2,740.20 = 1,146.48 : x
2. Step 2: Convert to fraction form
   1,985.76/2,740.20 = 1,146.48/x
3. Step 3: Cross multiply
   1,985.76x = 2,740.20 × 1,146.48
4. Step 4: Simplify right side
   1,985.76x = 3,141,584.50
5. Step 5: Solve for x
   x = 3,141,584.50/1,985.76
6. Step 6: Final answer
   x = 1,582.06