Finding the Fourth Proportional to 1,499.95, 2,068.36 and 1,290.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.95 : 2,068.36 = 1,290.83 : x
2. Step 2: Convert to fraction form
   1,499.95/2,068.36 = 1,290.83/x
3. Step 3: Cross multiply
   1,499.95x = 2,068.36 × 1,290.83
4. Step 4: Simplify right side
   1,499.95x = 2,669,903.08
5. Step 5: Solve for x
   x = 2,669,903.08/1,499.95
6. Step 6: Final answer
   x = 1,780.00