Finding the Fourth Proportional to 1,985.27, 2,978.06 and 1,010.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985.27 : 2,978.06 = 1,010.84 : x
2. Step 2: Convert to fraction form
   1,985.27/2,978.06 = 1,010.84/x
3. Step 3: Cross multiply
   1,985.27x = 2,978.06 × 1,010.84
4. Step 4: Simplify right side
   1,985.27x = 3,010,322.23
5. Step 5: Solve for x
   x = 3,010,322.23/1,985.27
6. Step 6: Final answer
   x = 1,516.33