Finding the Fourth Proportional to 1,561.47, 2,345.25 and 1,148.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,561.47 : 2,345.25 = 1,148.99 : x
2. Step 2: Convert to fraction form
   1,561.47/2,345.25 = 1,148.99/x
3. Step 3: Cross multiply
   1,561.47x = 2,345.25 × 1,148.99
4. Step 4: Simplify right side
   1,561.47x = 2,694,657.07
5. Step 5: Solve for x
   x = 2,694,657.07/1,561.47
6. Step 6: Final answer
   x = 1,725.72