Finding the Fourth Proportional to 1,970.47, 2,719.14 and 1,131.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,970.47 : 2,719.14 = 1,131.10 : x
2. Step 2: Convert to fraction form
   1,970.47/2,719.14 = 1,131.10/x
3. Step 3: Cross multiply
   1,970.47x = 2,719.14 × 1,131.10
4. Step 4: Simplify right side
   1,970.47x = 3,075,619.25
5. Step 5: Solve for x
   x = 3,075,619.25/1,970.47
6. Step 6: Final answer
   x = 1,560.86