Finding the Fourth Proportional to 1,498.70, 2,069.35 and 1,420.74

Step by Step Solution

1. Step 1: Write the proportion equation
   1,498.70 : 2,069.35 = 1,420.74 : x
2. Step 2: Convert to fraction form
   1,498.70/2,069.35 = 1,420.74/x
3. Step 3: Cross multiply
   1,498.70x = 2,069.35 × 1,420.74
4. Step 4: Simplify right side
   1,498.70x = 2,940,004.77
5. Step 5: Solve for x
   x = 2,940,004.77/1,498.70
6. Step 6: Final answer
   x = 1,961.70