Finding the Fourth Proportional to 1,432.42, 1,977.68 and 929.21

Step by Step Solution

1. Step 1: Write the proportion equation
   1,432.42 : 1,977.68 = 929.21 : x
2. Step 2: Convert to fraction form
   1,432.42/1,977.68 = 929.21/x
3. Step 3: Cross multiply
   1,432.42x = 1,977.68 × 929.21
4. Step 4: Simplify right side
   1,432.42x = 1,837,672.47
5. Step 5: Solve for x
   x = 1,837,672.47/1,432.42
6. Step 6: Final answer
   x = 1,282.92