Finding the Fourth Proportional to 1,690.76, 2,335.06 and 1,507.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.76 : 2,335.06 = 1,507.52 : x
2. Step 2: Convert to fraction form
   1,690.76/2,335.06 = 1,507.52/x
3. Step 3: Cross multiply
   1,690.76x = 2,335.06 × 1,507.52
4. Step 4: Simplify right side
   1,690.76x = 3,520,149.65
5. Step 5: Solve for x
   x = 3,520,149.65/1,690.76
6. Step 6: Final answer
   x = 2,081.99