Finding the Fourth Proportional to 1,307.98, 1,970.96 and 1,081.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,307.98 : 1,970.96 = 1,081.95 : x
2. Step 2: Convert to fraction form
   1,307.98/1,970.96 = 1,081.95/x
3. Step 3: Cross multiply
   1,307.98x = 1,970.96 × 1,081.95
4. Step 4: Simplify right side
   1,307.98x = 2,132,490.27
5. Step 5: Solve for x
   x = 2,132,490.27/1,307.98
6. Step 6: Final answer
   x = 1,630.37