Finding the Fourth Proportional to 1,501.40, 2,070.78 and 1,304.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,501.40 : 2,070.78 = 1,304.12 : x
2. Step 2: Convert to fraction form
   1,501.40/2,070.78 = 1,304.12/x
3. Step 3: Cross multiply
   1,501.40x = 2,070.78 × 1,304.12
4. Step 4: Simplify right side
   1,501.40x = 2,700,545.61
5. Step 5: Solve for x
   x = 2,700,545.61/1,501.40
6. Step 6: Final answer
   x = 1,798.68