Finding the Fourth Proportional to 1,142,758.81, 1,714,700.15 and 459,618.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142,758.81 : 1,714,700.15 = 459,618.58 : x
2. Step 2: Convert to fraction form
   1,142,758.81/1,714,700.15 = 459,618.58/x
3. Step 3: Cross multiply
   1,142,758.81x = 1,714,700.15 × 459,618.58
4. Step 4: Simplify right side
   1,142,758.81x = 788,108,048,068.79
5. Step 5: Solve for x
   x = 788,108,048,068.79/1,142,758.81
6. Step 6: Final answer
   x = 689,653.88