Finding the Fourth Proportional to 1,410.86, 1,947.42 and 913.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.86 : 1,947.42 = 913.50 : x
2. Step 2: Convert to fraction form
   1,410.86/1,947.42 = 913.50/x
3. Step 3: Cross multiply
   1,410.86x = 1,947.42 × 913.50
4. Step 4: Simplify right side
   1,410.86x = 1,778,968.17
5. Step 5: Solve for x
   x = 1,778,968.17/1,410.86
6. Step 6: Final answer
   x = 1,260.91