Finding the Fourth Proportional to 1,680.47, 2,320.43 and 1,092.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680.47 : 2,320.43 = 1,092.01 : x
2. Step 2: Convert to fraction form
   1,680.47/2,320.43 = 1,092.01/x
3. Step 3: Cross multiply
   1,680.47x = 2,320.43 × 1,092.01
4. Step 4: Simplify right side
   1,680.47x = 2,533,932.76
5. Step 5: Solve for x
   x = 2,533,932.76/1,680.47
6. Step 6: Final answer
   x = 1,507.87