Finding the Fourth Proportional to 1,411.81, 2,117.69 and 753.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.81 : 2,117.69 = 753.91 : x
2. Step 2: Convert to fraction form
   1,411.81/2,117.69 = 753.91/x
3. Step 3: Cross multiply
   1,411.81x = 2,117.69 × 753.91
4. Step 4: Simplify right side
   1,411.81x = 1,596,543.90
5. Step 5: Solve for x
   x = 1,596,543.90/1,411.81
6. Step 6: Final answer
   x = 1,130.85