Finding the Fourth Proportional to 1,298.40, 1,937.61 and 1,160.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,298.40 : 1,937.61 = 1,160.00 : x
2. Step 2: Convert to fraction form
   1,298.40/1,937.61 = 1,160.00/x
3. Step 3: Cross multiply
   1,298.40x = 1,937.61 × 1,160.00
4. Step 4: Simplify right side
   1,298.40x = 2,247,617.91
5. Step 5: Solve for x
   x = 2,247,617.91/1,298.40
6. Step 6: Final answer
   x = 1,731.07