Finding the Fourth Proportional to 1,411.21, 2,113.15 and 973.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.21 : 2,113.15 = 973.81 : x
2. Step 2: Convert to fraction form
   1,411.21/2,113.15 = 973.81/x
3. Step 3: Cross multiply
   1,411.21x = 2,113.15 × 973.81
4. Step 4: Simplify right side
   1,411.21x = 2,057,806.60
5. Step 5: Solve for x
   x = 2,057,806.60/1,411.21
6. Step 6: Final answer
   x = 1,458.19