Finding the Fourth Proportional to 1,870.66, 2,792.80 and 1,429.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,870.66 : 2,792.80 = 1,429.58 : x
2. Step 2: Convert to fraction form
   1,870.66/2,792.80 = 1,429.58/x
3. Step 3: Cross multiply
   1,870.66x = 2,792.80 × 1,429.58
4. Step 4: Simplify right side
   1,870.66x = 3,992,531.02
5. Step 5: Solve for x
   x = 3,992,531.02/1,870.66
6. Step 6: Final answer
   x = 2,134.29