Finding the Fourth Proportional to 1,970.84, 2,955.98 and 1,238.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.84 : 2,955.98 = 1,238.16 : x
2. Step 2: Convert to fraction form
   1,970.84/2,955.98 = 1,238.16/x
3. Step 3: Cross multiply
   1,970.84x = 2,955.98 × 1,238.16
4. Step 4: Simplify right side
   1,970.84x = 3,659,976.20
5. Step 5: Solve for x
   x = 3,659,976.20/1,970.84
6. Step 6: Final answer
   x = 1,857.06