Finding the Fourth Proportional to 1,970.50, 2,719.47 and 1,131.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.50 : 2,719.47 = 1,131.32 : x
2. Step 2: Convert to fraction form
   1,970.50/2,719.47 = 1,131.32/x
3. Step 3: Cross multiply
   1,970.50x = 2,719.47 × 1,131.32
4. Step 4: Simplify right side
   1,970.50x = 3,076,586.54
5. Step 5: Solve for x
   x = 3,076,586.54/1,970.50
6. Step 6: Final answer
   x = 1,561.32