Finding the Fourth Proportional to 1,405.12, 2,091.53 and 1,384.33

Step by Step Solution

1. Step 1: Write the proportion equation
   1,405.12 : 2,091.53 = 1,384.33 : x
2. Step 2: Convert to fraction form
   1,405.12/2,091.53 = 1,384.33/x
3. Step 3: Cross multiply
   1,405.12x = 2,091.53 × 1,384.33
4. Step 4: Simplify right side
   1,405.12x = 2,895,367.72
5. Step 5: Solve for x
   x = 2,895,367.72/1,405.12
6. Step 6: Final answer
   x = 2,060.58