Finding the Fourth Proportional to 1,498.50, 2,068.20 and 877.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.50 : 2,068.20 = 877.50 : x
2. Step 2: Convert to fraction form
   1,498.50/2,068.20 = 877.50/x
3. Step 3: Cross multiply
   1,498.50x = 2,068.20 × 877.50
4. Step 4: Simplify right side
   1,498.50x = 1,814,845.50
5. Step 5: Solve for x
   x = 1,814,845.50/1,498.50
6. Step 6: Final answer
   x = 1,211.11