Finding the Fourth Proportional to 978,002.64, 1,349,645.76 and 570,073.68

Step by Step Solution

1. Step 1: Write the proportion equation
   978,002.64 : 1,349,645.76 = 570,073.68 : x
2. Step 2: Convert to fraction form
   978,002.64/1,349,645.76 = 570,073.68/x
3. Step 3: Cross multiply
   978,002.64x = 1,349,645.76 × 570,073.68
4. Step 4: Simplify right side
   978,002.64x = 769,397,525,099.60
5. Step 5: Solve for x
   x = 769,397,525,099.60/978,002.64
6. Step 6: Final answer
   x = 786,702.91