Finding the Fourth Proportional to 1,988.52, 2,980.52 and 892.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,988.52 : 2,980.52 = 892.16 : x
2. Step 2: Convert to fraction form
   1,988.52/2,980.52 = 892.16/x
3. Step 3: Cross multiply
   1,988.52x = 2,980.52 × 892.16
4. Step 4: Simplify right side
   1,988.52x = 2,659,100.72
5. Step 5: Solve for x
   x = 2,659,100.72/1,988.52
6. Step 6: Final answer
   x = 1,337.23