Finding the Fourth Proportional to 1,411.60, 2,111.64 and 1,043.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.60 : 2,111.64 = 1,043.80 : x
2. Step 2: Convert to fraction form
   1,411.60/2,111.64 = 1,043.80/x
3. Step 3: Cross multiply
   1,411.60x = 2,111.64 × 1,043.80
4. Step 4: Simplify right side
   1,411.60x = 2,204,129.83
5. Step 5: Solve for x
   x = 2,204,129.83/1,411.60
6. Step 6: Final answer
   x = 1,561.44