Finding the Fourth Proportional to 1,326.48, 1,990.80 and 1,061.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,326.48 : 1,990.80 = 1,061.52 : x
2. Step 2: Convert to fraction form
   1,326.48/1,990.80 = 1,061.52/x
3. Step 3: Cross multiply
   1,326.48x = 1,990.80 × 1,061.52
4. Step 4: Simplify right side
   1,326.48x = 2,113,274.02
5. Step 5: Solve for x
   x = 2,113,274.02/1,326.48
6. Step 6: Final answer
   x = 1,593.14