Finding the Fourth Proportional to 1,780.03, 2,458.02 and 1,117.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,780.03 : 2,458.02 = 1,117.99 : x
2. Step 2: Convert to fraction form
   1,780.03/2,458.02 = 1,117.99/x
3. Step 3: Cross multiply
   1,780.03x = 2,458.02 × 1,117.99
4. Step 4: Simplify right side
   1,780.03x = 2,748,041.78
5. Step 5: Solve for x
   x = 2,748,041.78/1,780.03
6. Step 6: Final answer
   x = 1,543.82