Finding the Fourth Proportional to 1,970.82, 2,957.25 and 1,857.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.82 : 2,957.25 = 1,857.37 : x
2. Step 2: Convert to fraction form
   1,970.82/2,957.25 = 1,857.37/x
3. Step 3: Cross multiply
   1,970.82x = 2,957.25 × 1,857.37
4. Step 4: Simplify right side
   1,970.82x = 5,492,700.04
5. Step 5: Solve for x
   x = 5,492,700.04/1,970.82
6. Step 6: Final answer
   x = 2,787.01