Finding the Fourth Proportional to 1,811.88, 2,498.72 and 1,147.60

Step by Step Solution

1. Step 1: Write the proportion equation
   1,811.88 : 2,498.72 = 1,147.60 : x
2. Step 2: Convert to fraction form
   1,811.88/2,498.72 = 1,147.60/x
3. Step 3: Cross multiply
   1,811.88x = 2,498.72 × 1,147.60
4. Step 4: Simplify right side
   1,811.88x = 2,867,531.07
5. Step 5: Solve for x
   x = 2,867,531.07/1,811.88
6. Step 6: Final answer
   x = 1,582.63