Finding the Fourth Proportional to 2,077.08, 3,111.30 and 1,521.40

Step by Step Solution

1. Step 1: Write the proportion equation
   2,077.08 : 3,111.30 = 1,521.40 : x
2. Step 2: Convert to fraction form
   2,077.08/3,111.30 = 1,521.40/x
3. Step 3: Cross multiply
   2,077.08x = 3,111.30 × 1,521.40
4. Step 4: Simplify right side
   2,077.08x = 4,733,531.82
5. Step 5: Solve for x
   x = 4,733,531.82/2,077.08
6. Step 6: Final answer
   x = 2,278.94