Finding the Fourth Proportional to 1,690.56, 2,332.74 and 1,101.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,690.56 : 2,332.74 = 1,101.89 : x
2. Step 2: Convert to fraction form
   1,690.56/2,332.74 = 1,101.89/x
3. Step 3: Cross multiply
   1,690.56x = 2,332.74 × 1,101.89
4. Step 4: Simplify right side
   1,690.56x = 2,570,411.21
5. Step 5: Solve for x
   x = 2,570,411.21/1,690.56
6. Step 6: Final answer
   x = 1,520.45