Finding the Fourth Proportional to 1,980.91, 2,970.69 and 940.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,980.91 : 2,970.69 = 940.33 : x
2. Step 2: Convert to fraction form
   1,980.91/2,970.69 = 940.33/x
3. Step 3: Cross multiply
   1,980.91x = 2,970.69 × 940.33
4. Step 4: Simplify right side
   1,980.91x = 2,793,428.93
5. Step 5: Solve for x
   x = 2,793,428.93/1,980.91
6. Step 6: Final answer
   x = 1,410.17