Finding the Fourth Proportional to 1,333.88, 1,994.24 and 1,130.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,333.88 : 1,994.24 = 1,130.72 : x
2. Step 2: Convert to fraction form
   1,333.88/1,994.24 = 1,130.72/x
3. Step 3: Cross multiply
   1,333.88x = 1,994.24 × 1,130.72
4. Step 4: Simplify right side
   1,333.88x = 2,254,927.05
5. Step 5: Solve for x
   x = 2,254,927.05/1,333.88
6. Step 6: Final answer
   x = 1,690.50