Finding the Fourth Proportional to 1,410.59, 2,112.51 and 915.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,410.59 : 2,112.51 = 915.95 : x
2. Step 2: Convert to fraction form
   1,410.59/2,112.51 = 915.95/x
3. Step 3: Cross multiply
   1,410.59x = 2,112.51 × 915.95
4. Step 4: Simplify right side
   1,410.59x = 1,934,953.53
5. Step 5: Solve for x
   x = 1,934,953.53/1,410.59
6. Step 6: Final answer
   x = 1,371.73