Finding the Fourth Proportional to 1,521.59, 2,279.94 and 1,375.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.59 : 2,279.94 = 1,375.79 : x
2. Step 2: Convert to fraction form
   1,521.59/2,279.94 = 1,375.79/x
3. Step 3: Cross multiply
   1,521.59x = 2,279.94 × 1,375.79
4. Step 4: Simplify right side
   1,521.59x = 3,136,707.25
5. Step 5: Solve for x
   x = 3,136,707.25/1,521.59
6. Step 6: Final answer
   x = 2,061.47