Finding the Fourth Proportional to 1,507.77, 2,079.56 and 1,152.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,507.77 : 2,079.56 = 1,152.80 : x
2. Step 2: Convert to fraction form
   1,507.77/2,079.56 = 1,152.80/x
3. Step 3: Cross multiply
   1,507.77x = 2,079.56 × 1,152.80
4. Step 4: Simplify right side
   1,507.77x = 2,397,300.61
5. Step 5: Solve for x
   x = 2,397,300.61/1,507.77
6. Step 6: Final answer
   x = 1,589.96