Finding the Fourth Proportional to 1,499.53, 2,070.46 and 910.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,499.53 : 2,070.46 = 910.86 : x
2. Step 2: Convert to fraction form
   1,499.53/2,070.46 = 910.86/x
3. Step 3: Cross multiply
   1,499.53x = 2,070.46 × 910.86
4. Step 4: Simplify right side
   1,499.53x = 1,885,899.20
5. Step 5: Solve for x
   x = 1,885,899.20/1,499.53
6. Step 6: Final answer
   x = 1,257.66