Finding the Fourth Proportional to 1,690.76, 2,334.84 and 1,598.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.76 : 2,334.84 = 1,598.72 : x
2. Step 2: Convert to fraction form
   1,690.76/2,334.84 = 1,598.72/x
3. Step 3: Cross multiply
   1,690.76x = 2,334.84 × 1,598.72
4. Step 4: Simplify right side
   1,690.76x = 3,732,755.40
5. Step 5: Solve for x
   x = 3,732,755.40/1,690.76
6. Step 6: Final answer
   x = 2,207.74