Finding the Fourth Proportional to 1,981.55, 2,970.30 and 1,159.40

Step by Step Solution

1. Step 1: Write the proportion equation
   1,981.55 : 2,970.30 = 1,159.40 : x
2. Step 2: Convert to fraction form
   1,981.55/2,970.30 = 1,159.40/x
3. Step 3: Cross multiply
   1,981.55x = 2,970.30 × 1,159.40
4. Step 4: Simplify right side
   1,981.55x = 3,443,765.82
5. Step 5: Solve for x
   x = 3,443,765.82/1,981.55
6. Step 6: Final answer
   x = 1,737.92