Finding the Fourth Proportional to 1,427.59, 1,970.40 and 929.35

Step by Step Solution

1. Step 1: Write the proportion equation
   1,427.59 : 1,970.40 = 929.35 : x
2. Step 2: Convert to fraction form
   1,427.59/1,970.40 = 929.35/x
3. Step 3: Cross multiply
   1,427.59x = 1,970.40 × 929.35
4. Step 4: Simplify right side
   1,427.59x = 1,831,191.24
5. Step 5: Solve for x
   x = 1,831,191.24/1,427.59
6. Step 6: Final answer
   x = 1,282.72