Finding the Fourth Proportional to 1,970.54, 2,719.47 and 1,131.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.54 : 2,719.47 = 1,131.51 : x
2. Step 2: Convert to fraction form
   1,970.54/2,719.47 = 1,131.51/x
3. Step 3: Cross multiply
   1,970.54x = 2,719.47 × 1,131.51
4. Step 4: Simplify right side
   1,970.54x = 3,077,107.50
5. Step 5: Solve for x
   x = 3,077,107.50/1,970.54
6. Step 6: Final answer
   x = 1,561.56